20162391320 has 32 divisors (see below), whose sum is σ = 46828782720. Its totient is φ = 7804796160.

The previous prime is 20162391311. The next prime is 20162391341. The reversal of 20162391320 is 2319326102.

It is a super-2 number, since 2×20162391320² (a number of 21 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, 8128757 + ... + 8131236.

It is an arithmetic number, because the mean of its divisors is an integer number (1463399460).

Almost surely, 2^20162391320 is an apocalyptic number.

20162391320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20162391320 is an abundant number, since it is smaller than the sum of its proper divisors (26666391400).

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

20162391320 is a wasteful number, since it uses less digits than its factorization.

20162391320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16260035 (or 16260031 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 20162391320 in words is "twenty billion, one hundred sixty-two million, three hundred ninety-one thousand, three hundred twenty".