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48912262021 = 7461521641
BaseRepresentation
bin101101100011011001…
…011110001110000101
311200020210001100122001
4231203121132032011
51300133014341041
634245303305301
73351043240000
oct554331361605
9150223040561
1048912262021
111981a773447
12959074b231
1347c65c339c
1425200a4537
151414132131
hexb6365e385

48912262021 has 40 divisors (see below), whose sum is σ = 58198304088. Its totient is φ = 41094144000.

The previous prime is 48912261989. The next prime is 48912262027. The reversal of 48912262021 is 12026221984.

It can be written as a sum of positive squares in 4 ways, for example, as 2217373921 + 46694888100 = 47089^2 + 216090^2 .

It is not a de Polignac number, because 48912262021 - 25 = 48912261989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48912262027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 76305861 + ... + 76306501.

Almost surely, 248912262021 is an apocalyptic number.

It is an amenable number.

48912262021 is a deficient number, since it is larger than the sum of its proper divisors (9286042067).

48912262021 is an frugal number, since it uses more digits than its factorization.

48912262021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251 (or 1230 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 48912262021 in words is "forty-eight billion, nine hundred twelve million, two hundred sixty-two thousand, twenty-one".

Divisors: 1 7 49 61 343 427 521 641 2401 2989 3647 4487 20923 25529 31409 31781 39101 146461 178703 219863 222467 273707 333961 1250921 1539041 1557269 1915949 2337727 10900883 13411643 16364089 20371621 76306181 93881501 114548623 142601347 801840361 998209429 6987466003 48912262021