161715056101651 has 8 divisors (see below), whose sum is σ = 174346687584944. Its totient is φ = 149110854873120.

The previous prime is 161715056101601. The next prime is 161715056101663. The reversal of 161715056101651 is 156101650517161.

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

It is a cyclic number.

It is not a de Polignac number, because 161715056101651 - 2⁹ = 161715056101139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161715056101601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6857551440 + ... + 6857575021.

It is an arithmetic number, because the mean of its divisors is an integer number (21793335948118).

Almost surely, 2^{161715056101651} is an apocalyptic number.

161715056101651 is a deficient number, since it is larger than the sum of its proper divisors (12631631483293).

161715056101651 is a wasteful number, since it uses less digits than its factorization.

161715056101651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13715127381.

The product of its (nonzero) digits is 189000, while the sum is 46.

The spelling of 161715056101651 in words is "one hundred sixty-one trillion, seven hundred fifteen billion, fifty-six million, one hundred one thousand, six hundred fifty-one".