16872390340 has 48 divisors (see below), whose sum is σ = 38198834352. Its totient is φ = 6223067136.

The previous prime is 16872390287. The next prime is 16872390361. The reversal of 16872390340 is 4309327861.

It can be written as a sum of positive squares in 8 ways, for example, as 2372858944 + 14499531396 = 48712^2 + 120414^2 .

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, 208992 + ... + 278248.

It is an arithmetic number, because the mean of its divisors is an integer number (795809049).

Almost surely, 2^16872390340 is an apocalyptic number.

16872390340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16872390340 is an abundant number, since it is smaller than the sum of its proper divisors (21326444012).

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

16872390340 is a wasteful number, since it uses less digits than its factorization.

16872390340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70216 (or 70214 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 16872390340 in words is "sixteen billion, eight hundred seventy-two million, three hundred ninety thousand, three hundred forty".