61725471560 has 16 divisors (see below), whose sum is σ = 138882311100. Its totient is φ = 24690188608.

The previous prime is 61725471559. The next prime is 61725471601. The reversal of 61725471560 is 6517452716.

It can be written as a sum of positive squares in 2 ways, for example, as 61725414916 + 56644 = 248446^2 + 238^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 771568355 + ... + 771568434.

Almost surely, 2^61725471560 is an apocalyptic number.

It is an amenable number.

61725471560 is an abundant number, since it is smaller than the sum of its proper divisors (77156839540).

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

61725471560 is a wasteful number, since it uses less digits than its factorization.

61725471560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543136800 (or 1543136796 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 44.

The spelling of 61725471560 in words is "sixty-one billion, seven hundred twenty-five million, four hundred seventy-one thousand, five hundred sixty".