56828777782865 has 16 divisors (see below), whose sum is σ = 78770156158080. Its totient is φ = 38898842545920.

The previous prime is 56828777782793. The next prime is 56828777782871.

56828777782865 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56828777782865 - 2¹⁶ = 56828777717329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30389719805 + ... + 30389721674.

It is an arithmetic number, because the mean of its divisors is an integer number (4923134759880).

Almost surely, 2^{56828777782865} is an apocalyptic number.

56828777782865 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56828777782865 is a deficient number, since it is larger than the sum of its proper divisors (21941378375215).

56828777782865 is a wasteful number, since it uses less digits than its factorization.

56828777782865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60779441512.

The product of its digits is 35404185600, while the sum is 86.

The spelling of 56828777782865 in words is "fifty-six trillion, eight hundred twenty-eight billion, seven hundred seventy-seven million, seven hundred eighty-two thousand, eight hundred sixty-five".