61257648584 has 32 divisors (see below), whose sum is σ = 126449294400. Its totient is φ = 27588928320.

The previous prime is 61257648563. The next prime is 61257648587. The reversal of 61257648584 is 48584675216.

It is not an unprimeable number, because it can be changed into a prime (61257648587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3183572 + ... + 3202755.

It is an arithmetic number, because the mean of its divisors is an integer number (3951540450).

Almost surely, 2^61257648584 is an apocalyptic number.

It is an amenable number.

61257648584 is an abundant number, since it is smaller than the sum of its proper divisors (65191645816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61257648584 is a wasteful number, since it uses less digits than its factorization.

61257648584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6386453 (or 6386449 counting only the distinct ones).

The product of its digits is 12902400, while the sum is 56.

The spelling of 61257648584 in words is "sixty-one billion, two hundred fifty-seven million, six hundred forty-eight thousand, five hundred eighty-four".