161010156666458 has 32 divisors (see below), whose sum is σ = 265827586959360. Its totient is φ = 72531994268160.

The previous prime is 161010156666433. The next prime is 161010156666511. The reversal of 161010156666458 is 854666651010161.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon 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, 23653991 + ... + 29690597.

It is an arithmetic number, because the mean of its divisors is an integer number (8307112092480).

Almost surely, 2^{161010156666458} is an apocalyptic number.

161010156666458 is a deficient number, since it is larger than the sum of its proper divisors (104817430292902).

161010156666458 is a wasteful number, since it uses less digits than its factorization.

161010156666458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6047462.

The product of its (nonzero) digits is 6220800, while the sum is 56.

The spelling of 161010156666458 in words is "one hundred sixty-one trillion, ten billion, one hundred fifty-six million, six hundred sixty-six thousand, four hundred fifty-eight".