18761707716 has 12 divisors (see below), whose sum is σ = 43777318032. Its totient is φ = 6253902568.

The previous prime is 18761707703. The next prime is 18761707759. The reversal of 18761707716 is 61770716781.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×18761707716² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) 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 3 ways as a sum of consecutive naturals, for example, 781737810 + ... + 781737833.

It is an arithmetic number, because the mean of its divisors is an integer number (3648109836).

Almost surely, 2^18761707716 is an apocalyptic number.

It is an amenable number.

18761707716 is an abundant number, since it is smaller than the sum of its proper divisors (25015610316).

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

18761707716 is a wasteful number, since it uses less digits than its factorization.

18761707716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563475650 (or 1563475648 counting only the distinct ones).

The product of its (nonzero) digits is 691488, while the sum is 51.

The spelling of 18761707716 in words is "eighteen billion, seven hundred sixty-one million, seven hundred seven thousand, seven hundred sixteen".