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48771630649 = 7445072
BaseRepresentation
bin101101011011000001…
…000000011000111001
311122212222102112122201
4231123001000120321
51244341014140044
634223321150201
73344415010000
oct553301003071
9148788375581
1048771630649
111975834aa75
12955162b361
1347a3424861
142509537c37
151406b037d4
hexb5b040639

48771630649 has 15 divisors (see below), whose sum is σ = 56909477157. Its totient is φ = 41794979436.

The previous prime is 48771630641. The next prime is 48771630751. The reversal of 48771630649 is 94603617784.

The square root of 48771630649 is 220843.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 48771630649 - 23 = 48771630641 is a prime.

It is a super-4 number, since 4×487716306494 (a number of 44 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 48771630649.

It is not an unprimeable number, because it can be changed into a prime (48771630641) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 10819054 + ... + 10823560.

Almost surely, 248771630649 is an apocalyptic number.

48771630649 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

48771630649 is the 220843-rd square number.

48771630649 is the 110422-nd centered octagonal number.

It is an amenable number.

48771630649 is a deficient number, since it is larger than the sum of its proper divisors (8137846508).

48771630649 is an frugal number, since it uses more digits than its factorization.

48771630649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9042 (or 4514 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 48771630649 in words is "forty-eight billion, seven hundred seventy-one million, six hundred thirty thousand, six hundred forty-nine".

Divisors: 1 7 49 343 2401 4507 31549 220843 1545901 10821307 20313049 142191343 995339401 6967375807 48771630649