16556063436 has 72 divisors (see below), whose sum is σ = 46403102928. Its totient is φ = 4934736000.

The previous prime is 16556063423. The next prime is 16556063437. The reversal of 16556063436 is 63436065561.

16556063436 is a `hidden beast` number, since 1 + 6 + 5 + 5 + 6 + 0 + 634 + 3 + 6 = 666.

It is a super-2 number, since 2×16556063436² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 16556063391 and 16556063400.

It is not an unprimeable number, because it can be changed into a prime (16556063437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 318535 + ... + 366846.

Almost surely, 2^16556063436 is an apocalyptic number.

It is an amenable number.

16556063436 is an abundant number, since it is smaller than the sum of its proper divisors (29847039492).

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

16556063436 is a wasteful number, since it uses less digits than its factorization.

16556063436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685463 (or 685458 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 45.

The spelling of 16556063436 in words is "sixteen billion, five hundred fifty-six million, sixty-three thousand, four hundred thirty-six".