161256352555088 has 30 divisors (see below), whose sum is σ = 363443845620186. Its totient is φ = 69109865380416.

The previous prime is 161256352555087. The next prime is 161256352555211. The reversal of 161256352555088 is 880555253652161.

It can be written as a sum of positive squares in only one way, i.e., 149934931123264 + 11321421431824 = 12244792^2 + 3364732^2 .

It is a super-2 number, since 2×161256352555088² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161256352555088.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161256352555087) 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, 102842060795 + ... + 102842062362.

Almost surely, 2^{161256352555088} is an apocalyptic number.

It is an amenable number.

161256352555088 is an abundant number, since it is smaller than the sum of its proper divisors (202187493065098).

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

161256352555088 is a wasteful number, since it uses less digits than its factorization.

161256352555088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205684123179 (or 205684123166 counting only the distinct ones).

The product of its (nonzero) digits is 86400000, while the sum is 62.

The spelling of 161256352555088 in words is "one hundred sixty-one trillion, two hundred fifty-six billion, three hundred fifty-two million, five hundred fifty-five thousand, eighty-eight".