56807385649 has 27 divisors (see below), whose sum is σ = 67084779321. Its totient is φ = 47964145320.

The previous prime is 56807385617. The next prime is 56807385673. The reversal of 56807385649 is 94658370865.

The square root of 56807385649 is 238343.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 56807385649 - 2⁵ = 56807385617 is a prime.

It is a super-2 number, since 2×56807385649² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56807385689) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 131803464 + ... + 131803894.

Almost surely, 2^56807385649 is an apocalyptic number.

56807385649 is the 238343-rd square number.

56807385649 is the 119172-nd centered octagonal number.

It is an amenable number.

56807385649 is a deficient number, since it is larger than the sum of its proper divisors (10277393672).

56807385649 is an frugal number, since it uses more digits than its factorization.

56807385649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034 (or 517 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 61.

The spelling of 56807385649 in words is "fifty-six billion, eight hundred seven million, three hundred eighty-five thousand, six hundred forty-nine".