16721470530 has 48 divisors (see below), whose sum is σ = 43594372224. Its totient is φ = 4446900000.

The previous prime is 16721470523. The next prime is 16721470531. The reversal of 16721470530 is 3507412761.

It is a happy number.

16721470530 is a `hidden beast` number, since 1 + 67 + 21 + 47 + 0 + 530 = 666.

It is not an unprimeable number, because it can be changed into a prime (16721470531) 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, 220096 + ... + 286155.

It is an arithmetic number, because the mean of its divisors is an integer number (908216088).

Almost surely, 2^16721470530 is an apocalyptic number.

16721470530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16721470530 is an abundant number, since it is smaller than the sum of its proper divisors (26872901694).

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

16721470530 is a wasteful number, since it uses less digits than its factorization.

16721470530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506631 (or 506628 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The spelling of 16721470530 in words is "sixteen billion, seven hundred twenty-one million, four hundred seventy thousand, five hundred thirty".