64888009464961 has 16 divisors (see below), whose sum is σ = 70193967863040. Its totient is φ = 59748505112320.

The previous prime is 64888009464931. The next prime is 64888009464979. The reversal of 64888009464961 is 16946490088846.

It is a cyclic number.

It is not a de Polignac number, because 64888009464961 - 2²⁵ = 64887975910529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64888009464931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13684150 + ... + 17805391.

It is an arithmetic number, because the mean of its divisors is an integer number (4387122991440).

Almost surely, 2^{64888009464961} is an apocalyptic number.

It is an amenable number.

64888009464961 is a deficient number, since it is larger than the sum of its proper divisors (5305958398079).

64888009464961 is a wasteful number, since it uses less digits than its factorization.

64888009464961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31492184.

The product of its (nonzero) digits is 573308928, while the sum is 73.

The spelling of 64888009464961 in words is "sixty-four trillion, eight hundred eighty-eight billion, nine million, four hundred sixty-four thousand, nine hundred sixty-one".