166416031424402 has 8 divisors (see below), whose sum is σ = 249624306409356. Its totient is φ = 83207929287952.

The previous prime is 166416031424341. The next prime is 166416031424441. The reversal of 166416031424402 is 204424130614661.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 158010908517121 + 8405122907281 = 12570239^2 + 2899159^2 .

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

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, 40777733 + ... + 44672760.

Almost surely, 2^{166416031424402} is an apocalyptic number.

166416031424402 is a deficient number, since it is larger than the sum of its proper divisors (83208274984954).

166416031424402 is an equidigital number, since it uses as much as digits as its factorization.

166416031424402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86424252.

The product of its (nonzero) digits is 663552, while the sum is 44.

The spelling of 166416031424402 in words is "one hundred sixty-six trillion, four hundred sixteen billion, thirty-one million, four hundred twenty-four thousand, four hundred two".