161177722604 has 12 divisors (see below), whose sum is σ = 282065044128. Its totient is φ = 80587710000.

The previous prime is 161177722603. The next prime is 161177722631. The reversal of 161177722604 is 406227771161.

It is not an unprimeable number, because it can be changed into a prime (161177722603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79154 + ... + 573254.

It is an arithmetic number, because the mean of its divisors is an integer number (23505420344).

Almost surely, 2^161177722604 is an apocalyptic number.

It is an amenable number.

161177722604 is a deficient number, since it is larger than the sum of its proper divisors (120887321524).

161177722604 is a wasteful number, since it uses less digits than its factorization.

161177722604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575656 (or 575654 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 44.

The spelling of 161177722604 in words is "one hundred sixty-one billion, one hundred seventy-seven million, seven hundred twenty-two thousand, six hundred four".