162397977980 has 48 divisors (see below), whose sum is σ = 400289082816. Its totient is φ = 54174458880.

The previous prime is 162397977941. The next prime is 162397977997. The reversal of 162397977980 is 89779793261.

It is a self number, because there is not a number n which added to its sum of digits gives 162397977980.

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, 15670301 + ... + 15680660.

It is an arithmetic number, because the mean of its divisors is an integer number (8339355892).

Almost surely, 2^162397977980 is an apocalyptic number.

162397977980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

162397977980 is an abundant number, since it is smaller than the sum of its proper divisors (237891104836).

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

162397977980 is a wasteful number, since it uses less digits than its factorization.

162397977980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31351014 (or 31351012 counting only the distinct ones).

The product of its (nonzero) digits is 72013536, while the sum is 68.

The spelling of 162397977980 in words is "one hundred sixty-two billion, three hundred ninety-seven million, nine hundred seventy-seven thousand, nine hundred eighty".