65040451264 has 28 divisors (see below), whose sum is σ = 130342526208. Its totient is φ = 32198240000.

The previous prime is 65040451253. The next prime is 65040451319. The reversal of 65040451264 is 46215404056.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5024512 + ... + 5037439.

Almost surely, 2^65040451264 is an apocalyptic number.

65040451264 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

65040451264 is an abundant number, since it is smaller than the sum of its proper divisors (65302074944).

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

65040451264 is a wasteful number, since it uses less digits than its factorization.

65040451264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10062064 (or 10062054 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 65040451264 in words is "sixty-five billion, forty million, four hundred fifty-one thousand, two hundred sixty-four".