161480022156 has 18 divisors (see below), whose sum is σ = 408185611652. Its totient is φ = 53826674040.

The previous prime is 161480022149. The next prime is 161480022157. The reversal of 161480022156 is 651220084161.

It is a happy number.

161480022156 is a `hidden beast` number, since 1 + 6 + 1 + 480 + 0 + 22 + 156 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 4485556171 = 161480022156 / (1 + 6 + 1 + 4 + 8 + 0 + 0 + 2 + 2 + 1 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 161480022156.

It is not an unprimeable number, because it can be changed into a prime (161480022157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2242778050 + ... + 2242778121.

Almost surely, 2^161480022156 is an apocalyptic number.

It is an amenable number.

161480022156 is an abundant number, since it is smaller than the sum of its proper divisors (246705589496).

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

161480022156 is a wasteful number, since it uses less digits than its factorization.

161480022156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4485556181 (or 4485556176 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 161480022156 in words is "one hundred sixty-one billion, four hundred eighty million, twenty-two thousand, one hundred fifty-six".