16663713507 has 24 divisors (see below), whose sum is σ = 28956162560. Its totient is φ = 9020957040.

The previous prime is 16663713481. The next prime is 16663713511. The reversal of 16663713507 is 70531736661.

It is not a de Polignac number, because 16663713507 - 2¹¹ = 16663711459 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16663713007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6959419 + ... + 6961812.

Almost surely, 2^16663713507 is an apocalyptic number.

16663713507 is a deficient number, since it is larger than the sum of its proper divisors (12292449053).

16663713507 is a wasteful number, since it uses less digits than its factorization.

16663713507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13921263 (or 13921260 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 45.

It can be divided in two parts, 1666371 and 3507, that added together give a triangular number (1669878 = T₁₈₂₇).

The spelling of 16663713507 in words is "sixteen billion, six hundred sixty-three million, seven hundred thirteen thousand, five hundred seven".