664126040621466 has 32 divisors (see below), whose sum is σ = 1484080537723200. Its totient is φ = 220138613089200.

The previous prime is 664126040621401. The next prime is 664126040621579.

664126040621466 is a `hidden beast` number, since 6 + 6 + 4 + 1 + 2 + 6 + 0 + 4 + 0 + 621 + 4 + 6 + 6 = 666.

664126040621466 is nontrivially palindromic in base 10.

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

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, 34353706485 + ... + 34353725816.

It is an arithmetic number, because the mean of its divisors is an integer number (46377516803850).

Almost surely, 2^{664126040621466} is an apocalyptic number.

664126040621466 is an abundant number, since it is smaller than the sum of its proper divisors (819954497101734).

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

664126040621466 is a wasteful number, since it uses less digits than its factorization.

664126040621466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68707432491 (or 68707432485 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 54.

The spelling of 664126040621466 in words is "six hundred sixty-four trillion, one hundred twenty-six billion, forty million, six hundred twenty-one thousand, four hundred sixty-six".