56640725499 has 8 divisors (see below), whose sum is σ = 75522434560. Its totient is φ = 37759750056.

The previous prime is 56640725461. The next prime is 56640725527. The reversal of 56640725499 is 99452704665.

56640725499 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56640725499 - 2⁸ = 56640725243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56640725299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33342 + ... + 338220.

It is an arithmetic number, because the mean of its divisors is an integer number (9440304320).

Almost surely, 2^56640725499 is an apocalyptic number.

56640725499 is a deficient number, since it is larger than the sum of its proper divisors (18881709061).

56640725499 is a wasteful number, since it uses less digits than its factorization.

56640725499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366809.

The product of its (nonzero) digits is 16329600, while the sum is 57.

The spelling of 56640725499 in words is "fifty-six billion, six hundred forty million, seven hundred twenty-five thousand, four hundred ninety-nine".