65877877856 has 48 divisors (see below), whose sum is σ = 149044240800. Its totient is φ = 28077373440.

The previous prime is 65877877799. The next prime is 65877877861.

65877877856 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 771881 + ... + 852968.

It is an arithmetic number, because the mean of its divisors is an integer number (3105088350).

Almost surely, 2^65877877856 is an apocalyptic number.

It is an amenable number.

65877877856 is an abundant number, since it is smaller than the sum of its proper divisors (83166362944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65877877856 is a wasteful number, since it uses less digits than its factorization.

65877877856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625047 (or 1625039 counting only the distinct ones).

The product of its digits is 1106380800, while the sum is 74.

The spelling of 65877877856 in words is "sixty-five billion, eight hundred seventy-seven million, eight hundred seventy-seven thousand, eight hundred fifty-six".