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61069046689 = 723379310849
BaseRepresentation
bin111000110111111111…
…111011001110100001
312211122000012000010001
4320313333323032201
52000032133443224
644015453340001
74261230221620
oct706777731641
9184560160101
1061069046689
1123998980722
12ba03a97601
1359b3090cb1
142d548556b7
1518c6522544
hexe37ffb3a1

61069046689 has 8 divisors (see below), whose sum is σ = 72827683200. Its totient is φ = 50069031936.

The previous prime is 61069046677. The next prime is 61069046743. The reversal of 61069046689 is 98664096016.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61069046689 - 27 = 61069046561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61069046629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189655264 + ... + 189655585.

It is an arithmetic number, because the mean of its divisors is an integer number (9103460400).

Almost surely, 261069046689 is an apocalyptic number.

It is an amenable number.

61069046689 is a deficient number, since it is larger than the sum of its proper divisors (11758636511).

61069046689 is a wasteful number, since it uses less digits than its factorization.

61069046689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379310879.

The product of its (nonzero) digits is 3359232, while the sum is 55.

The spelling of 61069046689 in words is "sixty-one billion, sixty-nine million, forty-six thousand, six hundred eighty-nine".

Divisors: 1 7 23 161 379310849 2655175943 8724149527 61069046689