166613025380464 has 40 divisors (see below), whose sum is σ = 347650107423920. Its totient is φ = 76897075880448.

The previous prime is 166613025380429. The next prime is 166613025380497. The reversal of 166613025380464 is 464083520316661.

It is a super-2 number, since 2×166613025380464² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6478867 + ... + 19370125.

It is an arithmetic number, because the mean of its divisors is an integer number (8691252685598).

Almost surely, 2^{166613025380464} is an apocalyptic number.

It is an amenable number.

166613025380464 is an abundant number, since it is smaller than the sum of its proper divisors (181037082043456).

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

166613025380464 is a wasteful number, since it uses less digits than its factorization.

166613025380464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12953417 (or 12953411 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 55.

The spelling of 166613025380464 in words is "one hundred sixty-six trillion, six hundred thirteen billion, twenty-five million, three hundred eighty thousand, four hundred sixty-four".