16687075340 has 24 divisors (see below), whose sum is σ = 37738463280. Its totient is φ = 6161381568.

The previous prime is 16687075303. The next prime is 16687075357. The reversal of 16687075340 is 4357078661.

It is a super-2 number, since 2×16687075340² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

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, 32090270 + ... + 32090789.

It is an arithmetic number, because the mean of its divisors is an integer number (1572435970).

Almost surely, 2^16687075340 is an apocalyptic number.

16687075340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16687075340 is an abundant number, since it is smaller than the sum of its proper divisors (21051387940).

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

16687075340 is a wasteful number, since it uses less digits than its factorization.

16687075340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64181081 (or 64181079 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 16687075340 in words is "sixteen billion, six hundred eighty-seven million, seventy-five thousand, three hundred forty".