161127177597 has 12 divisors (see below), whose sum is σ = 232755364764. Its totient is φ = 107410683840.

The previous prime is 161127177503. The next prime is 161127177599. The reversal of 161127177597 is 795771721161.

161127177597 is a `hidden beast` number, since 1 + 6 + 11 + 27 + 17 + 7 + 597 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 25569928836 + 135557248761 = 159906^2 + 368181^2 .

It is not a de Polignac number, because 161127177597 - 2⁷ = 161127177469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161127177599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 480648 + ... + 743825.

It is an arithmetic number, because the mean of its divisors is an integer number (19396280397).

Almost surely, 2^161127177597 is an apocalyptic number.

It is an amenable number.

161127177597 is a deficient number, since it is larger than the sum of its proper divisors (71628187167).

161127177597 is a wasteful number, since it uses less digits than its factorization.

161127177597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239100 (or 1239097 counting only the distinct ones).

The product of its digits is 1296540, while the sum is 54.

It can be divided in two parts, 161127 and 177597, that added together give a square (338724 = 582²).

The spelling of 161127177597 in words is "one hundred sixty-one billion, one hundred twenty-seven million, one hundred seventy-seven thousand, five hundred ninety-seven".