16687016870172 has 36 divisors (see below), whose sum is σ = 42797831150088. Its totient is φ = 5056671778400.

The previous prime is 16687016870129. The next prime is 16687016870179. The reversal of 16687016870172 is 27107861078661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16687016870179) 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, 5746216479 + ... + 5746219382.

It is an arithmetic number, because the mean of its divisors is an integer number (1188828643058).

Almost surely, 2^{16687016870172} is an apocalyptic number.

16687016870172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16687016870172 is an abundant number, since it is smaller than the sum of its proper divisors (26110814279916).

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

16687016870172 is a wasteful number, since it uses less digits than its factorization.

16687016870172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11492435890 (or 11492435877 counting only the distinct ones).

The product of its (nonzero) digits is 9483264, while the sum is 60.

The spelling of 16687016870172 in words is "sixteen trillion, six hundred eighty-seven billion, sixteen million, eight hundred seventy thousand, one hundred seventy-two".