16870520620 has 24 divisors (see below), whose sum is σ = 35465308704. Its totient is φ = 6741119616.

The previous prime is 16870520591. The next prime is 16870520699. The reversal of 16870520620 is 2602507861.

It is a happy number.

It is a super-2 number, since 2×16870520620² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16870520620.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423504 + ... + 461623.

It is an arithmetic number, because the mean of its divisors is an integer number (1477721196).

Almost surely, 2^16870520620 is an apocalyptic number.

16870520620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16870520620 is an abundant number, since it is smaller than the sum of its proper divisors (18594788084).

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

16870520620 is a wasteful number, since it uses less digits than its factorization.

16870520620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886089 (or 886087 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 16870520620 in words is "sixteen billion, eight hundred seventy million, five hundred twenty thousand, six hundred twenty".