161097376388 has 24 divisors (see below), whose sum is σ = 316806883008. Its totient is φ = 71119911456.

The previous prime is 161097376381. The next prime is 161097376393. The reversal of 161097376388 is 883673790161.

It is not an unprimeable number, because it can be changed into a prime (161097376381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67347206 + ... + 67349597.

It is an arithmetic number, because the mean of its divisors is an integer number (13200286792).

Almost surely, 2^161097376388 is an apocalyptic number.

It is an amenable number.

161097376388 is a deficient number, since it is larger than the sum of its proper divisors (155709506620).

161097376388 is a wasteful number, since it uses less digits than its factorization.

161097376388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134696843 (or 134696841 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 59.

The spelling of 161097376388 in words is "one hundred sixty-one billion, ninety-seven million, three hundred seventy-six thousand, three hundred eighty-eight".