64868970166 has 64 divisors (see below), whose sum is σ = 133311628800. Its totient is φ = 23329464480.

The previous prime is 64868970109. The next prime is 64868970167. The reversal of 64868970166 is 66107986846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64868970167) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 232536 + ... + 428731.

It is an arithmetic number, because the mean of its divisors is an integer number (2082994200).

Almost surely, 2^64868970166 is an apocalyptic number.

64868970166 is an abundant number, since it is smaller than the sum of its proper divisors (68442658634).

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

64868970166 is a wasteful number, since it uses less digits than its factorization.

64868970166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661314 (or 661300 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 61.

The spelling of 64868970166 in words is "sixty-four billion, eight hundred sixty-eight million, nine hundred seventy thousand, one hundred sixty-six".