161960571598 has 16 divisors (see below), whose sum is σ = 279510098400. Its totient is φ = 68945822496.

The previous prime is 161960571587. The next prime is 161960571601. The reversal of 161960571598 is 895175069161.

It is a congruent 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, 38818761 + ... + 38822932.

It is an arithmetic number, because the mean of its divisors is an integer number (17469381150).

Almost surely, 2^161960571598 is an apocalyptic number.

161960571598 is a deficient number, since it is larger than the sum of its proper divisors (117549526802).

161960571598 is a wasteful number, since it uses less digits than its factorization.

161960571598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77641851.

The product of its (nonzero) digits is 4082400, while the sum is 58.

The spelling of 161960571598 in words is "one hundred sixty-one billion, nine hundred sixty million, five hundred seventy-one thousand, five hundred ninety-eight".