161236460104 has 8 divisors (see below), whose sum is σ = 302318362710. Its totient is φ = 80618230048.

The previous prime is 161236460093. The next prime is 161236460141. The reversal of 161236460104 is 401064632161.

It can be written as a sum of positive squares in only one way, i.e., 161203856004 + 32604100 = 401502^2 + 5710^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 161236460104.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10077278749 + ... + 10077278764.

Almost surely, 2^161236460104 is an apocalyptic number.

It is an amenable number.

161236460104 is a deficient number, since it is larger than the sum of its proper divisors (141081902606).

161236460104 is a wasteful number, since it uses less digits than its factorization.

161236460104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20154557519 (or 20154557515 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 161236460104 in words is "one hundred sixty-one billion, two hundred thirty-six million, four hundred sixty thousand, one hundred four".