161297730124 has 48 divisors (see below), whose sum is σ = 316982586816. Its totient is φ = 71414323200.

The previous prime is 161297730119. The next prime is 161297730127. The reversal of 161297730124 is 421037792161.

It is not an unprimeable number, because it can be changed into a prime (161297730127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 749937 + ... + 940744.

It is an arithmetic number, because the mean of its divisors is an integer number (6603803892).

Almost surely, 2^161297730124 is an apocalyptic number.

It is an amenable number.

161297730124 is a deficient number, since it is larger than the sum of its proper divisors (155684856692).

161297730124 is a wasteful number, since it uses less digits than its factorization.

161297730124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690786 (or 1690784 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 161297730124 in words is "one hundred sixty-one billion, two hundred ninety-seven million, seven hundred thirty thousand, one hundred twenty-four".