16506423512 has 16 divisors (see below), whose sum is σ = 30952338360. Its totient is φ = 8252466624.

The previous prime is 16506423511. The next prime is 16506423529. The reversal of 16506423512 is 21532460561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16506423511) 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, 7388 + ... + 181844.

Almost surely, 2^16506423512 is an apocalyptic number.

It is an amenable number.

16506423512 is a deficient number, since it is larger than the sum of its proper divisors (14445914848).

16506423512 is a wasteful number, since it uses less digits than its factorization.

16506423512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186290 (or 186286 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 16506423512 in words is "sixteen billion, five hundred six million, four hundred twenty-three thousand, five hundred twelve".