166553321255524 has 24 divisors (see below), whose sum is σ = 333108146224448. Its totient is φ = 71379672599520.

The previous prime is 166553321255509. The next prime is 166553321255593. The reversal of 166553321255524 is 425552123355661.

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, 7059654 + ... + 19568989.

Almost surely, 2^{166553321255524} is an apocalyptic number.

166553321255524 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

166553321255524 is an abundant number, since it is smaller than the sum of its proper divisors (166554824968924).

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

166553321255524 is a wasteful number, since it uses less digits than its factorization.

166553321255524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26852035 (or 26852033 counting only the distinct ones).

The product of its digits is 32400000, while the sum is 55.

The spelling of 166553321255524 in words is "one hundred sixty-six trillion, five hundred fifty-three billion, three hundred twenty-one million, two hundred fifty-five thousand, five hundred twenty-four".