166632615406535 has 16 divisors (see below), whose sum is σ = 201471596935200. Its totient is φ = 132299301813120.

The previous prime is 166632615406421. The next prime is 166632615406553. The reversal of 166632615406535 is 535604516236661.

It is not a de Polignac number, because 166632615406535 - 2¹⁰ = 166632615405511 is a prime.

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, 93814457 + ... + 95574146.

It is an arithmetic number, because the mean of its divisors is an integer number (12591974808450).

Almost surely, 2^{166632615406535} is an apocalyptic number.

166632615406535 is a deficient number, since it is larger than the sum of its proper divisors (34838981528665).

166632615406535 is a wasteful number, since it uses less digits than its factorization.

166632615406535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189389938.

The product of its (nonzero) digits is 69984000, while the sum is 59.

The spelling of 166632615406535 in words is "one hundred sixty-six trillion, six hundred thirty-two billion, six hundred fifteen million, four hundred six thousand, five hundred thirty-five".