161242572754 has 16 divisors (see below), whose sum is σ = 243772467840. Its totient is φ = 79985398480.

The previous prime is 161242572661. The next prime is 161242572769. The reversal of 161242572754 is 457275242161.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 974727 + ... + 1128085.

It is an arithmetic number, because the mean of its divisors is an integer number (15235779240).

Almost surely, 2^161242572754 is an apocalyptic number.

161242572754 is a deficient number, since it is larger than the sum of its proper divisors (82529895086).

161242572754 is a wasteful number, since it uses less digits than its factorization.

161242572754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157505.

The product of its digits is 940800, while the sum is 46.

The spelling of 161242572754 in words is "one hundred sixty-one billion, two hundred forty-two million, five hundred seventy-two thousand, seven hundred fifty-four".