166519648992 has 48 divisors (see below), whose sum is σ = 437471798400. Its totient is φ = 55461124992.

The previous prime is 166519648991. The next prime is 166519649033. The reversal of 166519648992 is 299846915661.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166519648991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 591742 + ... + 826557.

It is an arithmetic number, because the mean of its divisors is an integer number (9113995800).

Almost surely, 2^166519648992 is an apocalyptic number.

166519648992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166519648992 is an abundant number, since it is smaller than the sum of its proper divisors (270952149408).

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

166519648992 is a wasteful number, since it uses less digits than its factorization.

166519648992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419535 (or 1419527 counting only the distinct ones).

The product of its digits is 50388480, while the sum is 66.

The spelling of 166519648992 in words is "one hundred sixty-six billion, five hundred nineteen million, six hundred forty-eight thousand, nine hundred ninety-two".