161317406802 has 16 divisors (see below), whose sum is σ = 322639731072. Its totient is φ = 53771649360.

The previous prime is 161317406773. The next prime is 161317406807. The reversal of 161317406802 is 208604713161.

It is not an unprimeable number, because it can be changed into a prime (161317406807) 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, 328308 + ... + 656064.

It is an arithmetic number, because the mean of its divisors is an integer number (20164983192).

Almost surely, 2^161317406802 is an apocalyptic number.

161317406802 is an abundant number, since it is smaller than the sum of its proper divisors (161322324270).

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

161317406802 is a wasteful number, since it uses less digits than its factorization.

161317406802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409793.

The product of its (nonzero) digits is 48384, while the sum is 39.

The spelling of 161317406802 in words is "one hundred sixty-one billion, three hundred seventeen million, four hundred six thousand, eight hundred two".