161503976910 has 32 divisors (see below), whose sum is σ = 387678039840. Its totient is φ = 43060116608.

The previous prime is 161503976807. The next prime is 161503976923. The reversal of 161503976910 is 19679305161.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 161503976910.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302025 + ... + 643604.

It is an arithmetic number, because the mean of its divisors is an integer number (12114938745).

Almost surely, 2^161503976910 is an apocalyptic number.

161503976910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161503976910 is an abundant number, since it is smaller than the sum of its proper divisors (226174062930).

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

161503976910 is a wasteful number, since it uses less digits than its factorization.

161503976910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951332.

The product of its (nonzero) digits is 306180, while the sum is 48.

The spelling of 161503976910 in words is "one hundred sixty-one billion, five hundred three million, nine hundred seventy-six thousand, nine hundred ten".