56787262561 has 8 divisors (see below), whose sum is σ = 57653112384. Its totient is φ = 55921950480.

The previous prime is 56787262541. The next prime is 56787262573. The reversal of 56787262561 is 16526278765.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 56787262561 - 2¹³ = 56787254369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56787262531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80991 + ... + 346603.

It is an arithmetic number, because the mean of its divisors is an integer number (7206639048).

Almost surely, 2^56787262561 is an apocalyptic number.

It is an amenable number.

56787262561 is a deficient number, since it is larger than the sum of its proper divisors (865849823).

56787262561 is a wasteful number, since it uses less digits than its factorization.

56787262561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268871.

The product of its digits is 8467200, while the sum is 55.

The spelling of 56787262561 in words is "fifty-six billion, seven hundred eighty-seven million, two hundred sixty-two thousand, five hundred sixty-one".