56623277777 has 16 divisors (see below), whose sum is σ = 63129376512. Its totient is φ = 50345137920.

The previous prime is 56623277741. The next prime is 56623277839. The reversal of 56623277777 is 77777232665.

It is not a de Polignac number, because 56623277777 - 2³² = 52328310481 is a prime.

It is a super-2 number, since 2×56623277777² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56623277717) 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 15 ways as a sum of consecutive naturals, for example, 713513 + ... + 788889.

It is an arithmetic number, because the mean of its divisors is an integer number (3945586032).

Almost surely, 2^56623277777 is an apocalyptic number.

It is an amenable number.

56623277777 is a deficient number, since it is larger than the sum of its proper divisors (6506098735).

56623277777 is a wasteful number, since it uses less digits than its factorization.

56623277777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76888.

The product of its digits is 36303120, while the sum is 59.

The spelling of 56623277777 in words is "fifty-six billion, six hundred twenty-three million, two hundred seventy-seven thousand, seven hundred seventy-seven".