161041750690225 has 24 divisors (see below), whose sum is σ = 210203609099040. Its totient is φ = 122051682011520.

The previous prime is 161041750690213. The next prime is 161041750690231. The reversal of 161041750690225 is 522096057140161.

It is not a de Polignac number, because 161041750690225 - 2²⁷ = 161041616472497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58556589 + ... + 61245061.

It is an arithmetic number, because the mean of its divisors is an integer number (8758483712460).

Almost surely, 2^{161041750690225} is an apocalyptic number.

It is an amenable number.

161041750690225 is a deficient number, since it is larger than the sum of its proper divisors (49161858408815).

161041750690225 is a wasteful number, since it uses less digits than its factorization.

161041750690225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814609 (or 2814604 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 49.

The spelling of 161041750690225 in words is "one hundred sixty-one trillion, forty-one billion, seven hundred fifty million, six hundred ninety thousand, two hundred twenty-five".