65005256776 has 64 divisors (see below), whose sum is σ = 134035430400. Its totient is φ = 29418573888.

The previous prime is 65005256749. The next prime is 65005256801. The reversal of 65005256776 is 67765250056.

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, 3090471 + ... + 3111433.

It is an arithmetic number, because the mean of its divisors is an integer number (2094303600).

Almost surely, 2^65005256776 is an apocalyptic number.

It is an amenable number.

65005256776 is an abundant number, since it is smaller than the sum of its proper divisors (69030173624).

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

65005256776 is a wasteful number, since it uses less digits than its factorization.

65005256776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21898 (or 21894 counting only the distinct ones).

The product of its (nonzero) digits is 2646000, while the sum is 49.

The spelling of 65005256776 in words is "sixty-five billion, five million, two hundred fifty-six thousand, seven hundred seventy-six".