161055564204 has 48 divisors (see below), whose sum is σ = 383890526208. Its totient is φ = 52529459328.

The previous prime is 161055564199. The next prime is 161055564227. The reversal of 161055564204 is 402465550161.

It is a super-2 number, since 2×161055564204² (a number of 23 digits) contains 22 as substring.

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, 2293032 + ... + 2362224.

It is an arithmetic number, because the mean of its divisors is an integer number (7997719296).

Almost surely, 2^161055564204 is an apocalyptic number.

It is an amenable number.

161055564204 is an abundant number, since it is smaller than the sum of its proper divisors (222834962004).

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

161055564204 is a wasteful number, since it uses less digits than its factorization.

161055564204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73374 (or 73372 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 39.

The spelling of 161055564204 in words is "one hundred sixty-one billion, fifty-five million, five hundred sixty-four thousand, two hundred four".