16506331960 has 64 divisors (see below), whose sum is σ = 38254122720. Its totient is φ = 6405373440.

The previous prime is 16506331903. The next prime is 16506331973. The reversal of 16506331960 is 6913360561.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 497490 + ... + 529630.

Almost surely, 2^16506331960 is an apocalyptic number.

16506331960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16506331960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19127061360).

16506331960 is an abundant number, since it is smaller than the sum of its proper divisors (21747790760).

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

16506331960 is a wasteful number, since it uses less digits than its factorization.

16506331960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32536 (or 32532 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 40.

The spelling of 16506331960 in words is "sixteen billion, five hundred six million, three hundred thirty-one thousand, nine hundred sixty".