61257854272 has 14 divisors (see below), whose sum is σ = 121558554698. Its totient is φ = 30628927104.

The previous prime is 61257854257. The next prime is 61257854293. The reversal of 61257854272 is 27245875216.

It can be written as a sum of positive squares in only one way, i.e., 58455634176 + 2802220096 = 241776^2 + 52936^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 478576923 + ... + 478577050.

It is an arithmetic number, because the mean of its divisors is an integer number (8682753907).

Almost surely, 2^61257854272 is an apocalyptic number.

It is an amenable number.

61257854272 is a deficient number, since it is larger than the sum of its proper divisors (60300700426).

61257854272 is an equidigital number, since it uses as much as digits as its factorization.

61257854272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957153985 (or 957153975 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 49.

The spelling of 61257854272 in words is "sixty-one billion, two hundred fifty-seven million, eight hundred fifty-four thousand, two hundred seventy-two".