16164323540 has 24 divisors (see below), whose sum is σ = 34274647680. Its totient is φ = 6402954528.

The previous prime is 16164323491. The next prime is 16164323551. The reversal of 16164323540 is 4532346161.

It is a super-2 number, since 2×16164323540² (a number of 21 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 16164323540.

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, 3921320 + ... + 3925439.

It is an arithmetic number, because the mean of its divisors is an integer number (1428110320).

Almost surely, 2^16164323540 is an apocalyptic number.

16164323540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16164323540 is an abundant number, since it is smaller than the sum of its proper divisors (18110324140).

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

16164323540 is a wasteful number, since it uses less digits than its factorization.

16164323540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7846871 (or 7846869 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 16164323540 in words is "sixteen billion, one hundred sixty-four million, three hundred twenty-three thousand, five hundred forty".