162561412180 has 48 divisors (see below), whose sum is σ = 346529779344. Its totient is φ = 64045900800.

The previous prime is 162561412171. The next prime is 162561412199. The reversal of 162561412180 is 81214165261.

It can be written as a sum of positive squares in 8 ways, for example, as 78251716 + 162483160464 = 8846^2 + 403092^2 .

It is a congruent number.

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, 994230 + ... + 1146130.

It is an arithmetic number, because the mean of its divisors is an integer number (7219370403).

Almost surely, 2^162561412180 is an apocalyptic number.

162561412180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

162561412180 is an abundant number, since it is smaller than the sum of its proper divisors (183968367164).

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

162561412180 is a wasteful number, since it uses less digits than its factorization.

162561412180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152716 (or 152714 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The spelling of 162561412180 in words is "one hundred sixty-two billion, five hundred sixty-one million, four hundred twelve thousand, one hundred eighty".