16626472564 has 48 divisors (see below), whose sum is σ = 31897420240. Its totient is φ = 7536291840.

The previous prime is 16626472523. The next prime is 16626472567. The reversal of 16626472564 is 46527462661.

It can be written as a sum of positive squares in 8 ways, for example, as 10018408464 + 6608064100 = 100092^2 + 81290^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16626472567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2245252 + ... + 2252644.

Almost surely, 2^16626472564 is an apocalyptic number.

It is an amenable number.

16626472564 is a deficient number, since it is larger than the sum of its proper divisors (15270947676).

16626472564 is a wasteful number, since it uses less digits than its factorization.

16626472564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8180 (or 8178 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 49.

The spelling of 16626472564 in words is "sixteen billion, six hundred twenty-six million, four hundred seventy-two thousand, five hundred sixty-four".