61339830564 has 24 divisors (see below), whose sum is σ = 143224816000. Its totient is φ = 20432532384.

The previous prime is 61339830557. The next prime is 61339830619. The reversal of 61339830564 is 46503893316.

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 in 7 ways as a sum of consecutive naturals, for example, 1741564 + ... + 1776435.

Almost surely, 2^61339830564 is an apocalyptic number.

It is an amenable number.

61339830564 is an abundant number, since it is smaller than the sum of its proper divisors (81884985436).

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

61339830564 is a wasteful number, since it uses less digits than its factorization.

61339830564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3519459 (or 3519457 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 48.

The spelling of 61339830564 in words is "sixty-one billion, three hundred thirty-nine million, eight hundred thirty thousand, five hundred sixty-four".