166635245630406 has 32 divisors (see below), whose sum is σ = 385701834378240. Its totient is φ = 47007411062976.

The previous prime is 166635245630393. The next prime is 166635245630437. The reversal of 166635245630406 is 604036542536661.

It is a congruent number.

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, 25110793191 + ... + 25110799826.

It is an arithmetic number, because the mean of its divisors is an integer number (12053182324320).

Almost surely, 2^{166635245630406} is an apocalyptic number.

166635245630406 is an abundant number, since it is smaller than the sum of its proper divisors (219066588747834).

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

166635245630406 is a wasteful number, since it uses less digits than its factorization.

166635245630406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50221593108.

The product of its (nonzero) digits is 55987200, while the sum is 57.

The spelling of 166635245630406 in words is "one hundred sixty-six trillion, six hundred thirty-five billion, two hundred forty-five million, six hundred thirty thousand, four hundred six".