16530384531620 has 48 divisors (see below), whose sum is σ = 36238903061760. Its totient is φ = 6321910210176.

The previous prime is 16530384531613. The next prime is 16530384531623. The reversal of 16530384531620 is 2613548303561.

It is a super-2 number, since 2×16530384531620² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16530384531623) 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, 6781160 + ... + 8890719.

It is an arithmetic number, because the mean of its divisors is an integer number (754977147120).

Almost surely, 2^{16530384531620} is an apocalyptic number.

16530384531620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16530384531620 is an abundant number, since it is smaller than the sum of its proper divisors (19708518530140).

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

16530384531620 is a wasteful number, since it uses less digits than its factorization.

16530384531620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15674204 (or 15674202 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 16530384531620 in words is "sixteen trillion, five hundred thirty billion, three hundred eighty-four million, five hundred thirty-one thousand, six hundred twenty".