16626521404 has 12 divisors (see below), whose sum is σ = 29111355000. Its totient is φ = 8308991408.

The previous prime is 16626521333. The next prime is 16626521419. The reversal of 16626521404 is 40412562661.

It is a congruent number.

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, 1058554 + ... + 1074145.

It is an arithmetic number, because the mean of its divisors is an integer number (2425946250).

Almost surely, 2^16626521404 is an apocalyptic number.

It is an amenable number.

16626521404 is a deficient number, since it is larger than the sum of its proper divisors (12484833596).

16626521404 is a wasteful number, since it uses less digits than its factorization.

16626521404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134652 (or 2134650 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 16626521404 in words is "sixteen billion, six hundred twenty-six million, five hundred twenty-one thousand, four hundred four".