65040664236 has 12 divisors (see below), whose sum is σ = 151761549912. Its totient is φ = 21680221408.

The previous prime is 65040664229. The next prime is 65040664243. The reversal of 65040664236 is 63246604056.

It is an interprime number because it is at equal distance from previous prime (65040664229) and next prime (65040664243).

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2710027665 + ... + 2710027688.

It is an arithmetic number, because the mean of its divisors is an integer number (12646795826).

Almost surely, 2^65040664236 is an apocalyptic number.

It is an amenable number.

65040664236 is an abundant number, since it is smaller than the sum of its proper divisors (86720885676).

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

65040664236 is a wasteful number, since it uses less digits than its factorization.

65040664236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5420055360 (or 5420055358 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 65040664236 in words is "sixty-five billion, forty million, six hundred sixty-four thousand, two hundred thirty-six".