64400231166 has 8 divisors (see below), whose sum is σ = 128800462344. Its totient is φ = 21466743720.

The previous prime is 64400231143. The next prime is 64400231171. The reversal of 64400231166 is 66113200446.

It is a sphenic number, since it is the product of 3 distinct primes.

64400231166 is an admirable number.

It is a congruent number.

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, 5366685925 + ... + 5366685936.

It is an arithmetic number, because the mean of its divisors is an integer number (16100057793).

Almost surely, 2^64400231166 is an apocalyptic number.

64400231166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64400231166 is a wasteful number, since it uses less digits than its factorization.

64400231166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10733371866.

The product of its (nonzero) digits is 20736, while the sum is 33.

The spelling of 64400231166 in words is "sixty-four billion, four hundred million, two hundred thirty-one thousand, one hundred sixty-six".