64166664022326 has 32 divisors (see below), whose sum is σ = 142592870615520. Its totient is φ = 21388845422592.

The previous prime is 64166664022319. The next prime is 64166664022361. The reversal of 64166664022326 is 62322046666146.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38250726 + ... + 39892998.

It is an arithmetic number, because the mean of its divisors is an integer number (4456027206735).

Almost surely, 2^{64166664022326} is an apocalyptic number.

64166664022326 is an abundant number, since it is smaller than the sum of its proper divisors (78426206593194).

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

64166664022326 is a wasteful number, since it uses less digits than its factorization.

64166664022326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2365837 (or 2365831 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 54.

The spelling of 64166664022326 in words is "sixty-four trillion, one hundred sixty-six billion, six hundred sixty-four million, twenty-two thousand, three hundred twenty-six".