16163774436 has 12 divisors (see below), whose sum is σ = 37715473712. Its totient is φ = 5387924808.

The previous prime is 16163774413. The next prime is 16163774443. The reversal of 16163774436 is 63447736161.

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

It is a super-2 number, since 2×16163774436² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 673490590 + ... + 673490613.

Almost surely, 2^16163774436 is an apocalyptic number.

It is an amenable number.

16163774436 is an abundant number, since it is smaller than the sum of its proper divisors (21551699276).

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

16163774436 is a wasteful number, since it uses less digits than its factorization.

16163774436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346981210 (or 1346981208 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 48.

The spelling of 16163774436 in words is "sixteen billion, one hundred sixty-three million, seven hundred seventy-four thousand, four hundred thirty-six".