161165054994 has 16 divisors (see below), whose sum is σ = 327141007968. Its totient is φ = 52919868672.

The previous prime is 161165054957. The next prime is 161165055011. The reversal of 161165054994 is 499450561161.

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, 200453647 + ... + 200454450.

It is an arithmetic number, because the mean of its divisors is an integer number (20446312998).

Almost surely, 2^161165054994 is an apocalyptic number.

161165054994 is an abundant number, since it is smaller than the sum of its proper divisors (165975952974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161165054994 is a wasteful number, since it uses less digits than its factorization.

161165054994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400908169.

The product of its (nonzero) digits is 1166400, while the sum is 51.

The spelling of 161165054994 in words is "one hundred sixty-one billion, one hundred sixty-five million, fifty-four thousand, nine hundred ninety-four".