16487317872 has 60 divisors (see below), whose sum is σ = 46697547624. Its totient is φ = 5429554560.

The previous prime is 16487317813. The next prime is 16487317877. The reversal of 16487317872 is 27871378461.

It is a super-2 number, since 2×16487317872² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16487317877) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 677779 + ... + 701682.

Almost surely, 2^16487317872 is an apocalyptic number.

16487317872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16487317872 is an abundant number, since it is smaller than the sum of its proper divisors (30210229752).

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

16487317872 is a wasteful number, since it uses less digits than its factorization.

16487317872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379558 (or 1379549 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 54.

The spelling of 16487317872 in words is "sixteen billion, four hundred eighty-seven million, three hundred seventeen thousand, eight hundred seventy-two".