56729624720 has 20 divisors (see below), whose sum is σ = 131896377660. Its totient is φ = 22691849856.

The previous prime is 56729624719. The next prime is 56729624741. The reversal of 56729624720 is 2742692765.

It can be written as a sum of positive squares in 2 ways, for example, as 6074020096 + 50655604624 = 77936^2 + 225068^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-3 number, since 3×56729624720³ (a number of 33 digits) contains 333 as substring.

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, 354560075 + ... + 354560234.

It is an arithmetic number, because the mean of its divisors is an integer number (6594818883).

Almost surely, 2^56729624720 is an apocalyptic number.

It is an amenable number.

56729624720 is an abundant number, since it is smaller than the sum of its proper divisors (75166752940).

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

56729624720 is a wasteful number, since it uses less digits than its factorization.

56729624720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709120322 (or 709120316 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 56729624720 in words is "fifty-six billion, seven hundred twenty-nine million, six hundred twenty-four thousand, seven hundred twenty".