61560577472 has 28 divisors (see below), whose sum is σ = 122169241056. Its totient is φ = 30777776640.

The previous prime is 61560577451. The next prime is 61560577483. The reversal of 61560577472 is 27477506516.

It is a super-2 number, since 2×61560577472² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61560577472.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 940697 + ... + 1004007.

Almost surely, 2^61560577472 is an apocalyptic number.

It is an amenable number.

61560577472 is a deficient number, since it is larger than the sum of its proper divisors (60608663584).

61560577472 is a wasteful number, since it uses less digits than its factorization.

61560577472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78516 (or 78506 counting only the distinct ones).

The product of its (nonzero) digits is 2469600, while the sum is 50.

The spelling of 61560577472 in words is "sixty-one billion, five hundred sixty million, five hundred seventy-seven thousand, four hundred seventy-two".