64400231164 has 12 divisors (see below), whose sum is σ = 119329840224. Its totient is φ = 30305991104.

The previous prime is 64400231143. The next prime is 64400231171. The reversal of 64400231164 is 46113200446.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473531044 + ... + 473531179.

It is an arithmetic number, because the mean of its divisors is an integer number (9944153352).

Almost surely, 2^64400231164 is an apocalyptic number.

It is an amenable number.

64400231164 is a deficient number, since it is larger than the sum of its proper divisors (54929609060).

64400231164 is a wasteful number, since it uses less digits than its factorization.

64400231164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947062244 (or 947062242 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 64400231164 in words is "sixty-four billion, four hundred million, two hundred thirty-one thousand, one hundred sixty-four".