161500427239274 has 64 divisors (see below), whose sum is σ = 264202753842720. Its totient is φ = 73738826219520.

The previous prime is 161500427239271. The next prime is 161500427239303. The reversal of 161500427239274 is 472932724005161.

It can be written as a sum of positive squares in 16 ways, for example, as 95881403529025 + 65619023710249 = 9791905^2 + 8100557^2 .

It is not an unprimeable number, because it can be changed into a prime (161500427239271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 652643282 + ... + 652890690.

Almost surely, 2^{161500427239274} is an apocalyptic number.

161500427239274 is a deficient number, since it is larger than the sum of its proper divisors (102702326603446).

161500427239274 is a wasteful number, since it uses less digits than its factorization.

161500427239274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250043.

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 161500427239274 in words is "one hundred sixty-one trillion, five hundred billion, four hundred twenty-seven million, two hundred thirty-nine thousand, two hundred seventy-four".