162720744440 has 32 divisors (see below), whose sum is σ = 366378012000. Its totient is φ = 65042726784.

The previous prime is 162720744427. The next prime is 162720744457. The reversal of 162720744440 is 44447027261.

It is a super-2 number, since 2×162720744440² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1366220 + ... + 1480539.

It is an arithmetic number, because the mean of its divisors is an integer number (11449312875).

Almost surely, 2^162720744440 is an apocalyptic number.

162720744440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

162720744440 is an abundant number, since it is smaller than the sum of its proper divisors (203657267560).

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

162720744440 is a wasteful number, since it uses less digits than its factorization.

162720744440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2848199 (or 2848195 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 41.

The spelling of 162720744440 in words is "one hundred sixty-two billion, seven hundred twenty million, seven hundred forty-four thousand, four hundred forty".