166440311564502 has 8 divisors (see below), whose sum is σ = 332880623129016. Its totient is φ = 55480103854832.

The previous prime is 166440311564477. The next prime is 166440311564521. The reversal of 166440311564502 is 205465113044661.

166440311564502 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

166440311564502 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, 13870025963703 + ... + 13870025963714.

It is an arithmetic number, because the mean of its divisors is an integer number (41610077891127).

Almost surely, 2^{166440311564502} is an apocalyptic number.

166440311564502 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.

166440311564502 is a wasteful number, since it uses less digits than its factorization.

166440311564502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27740051927422.

The product of its (nonzero) digits is 2073600, while the sum is 48.

The spelling of 166440311564502 in words is "one hundred sixty-six trillion, four hundred forty billion, three hundred eleven million, five hundred sixty-four thousand, five hundred two".