16600520000 has 70 divisors (see below), whose sum is σ = 41163993618. Its totient is φ = 6640192000.

The previous prime is 16600519987. The next prime is 16600520021. The reversal of 16600520000 is 2500661.

It can be written as a sum of positive squares in 5 ways, for example, as 10515271936 + 6085248064 = 102544^2 + 78008^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 167507 + ... + 247506.

Almost surely, 2^16600520000 is an apocalyptic number.

16600520000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16600520000 is an abundant number, since it is smaller than the sum of its proper divisors (24563473618).

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

16600520000 is an frugal number, since it uses more digits than its factorization.

16600520000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415045 (or 415020 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The spelling of 16600520000 in words is "sixteen billion, six hundred million, five hundred twenty thousand".