16161693924 has 12 divisors (see below), whose sum is σ = 37710619184. Its totient is φ = 5387231304.

The previous prime is 16161693917. The next prime is 16161693929. The reversal of 16161693924 is 42939616161.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×16161693924² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16161693929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 673403902 + ... + 673403925.

Almost surely, 2^16161693924 is an apocalyptic number.

It is an amenable number.

16161693924 is an abundant number, since it is smaller than the sum of its proper divisors (21548925260).

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

16161693924 is a wasteful number, since it uses less digits than its factorization.

16161693924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346807834 (or 1346807832 counting only the distinct ones).

The product of its digits is 419904, while the sum is 48.

The spelling of 16161693924 in words is "sixteen billion, one hundred sixty-one million, six hundred ninety-three thousand, nine hundred twenty-four".