3851717659664 has 20 divisors (see below), whose sum is σ = 8528803389504. Its totient is φ = 1650736139808.

The previous prime is 3851717659661. The next prime is 3851717659681. The reversal of 3851717659664 is 4669567171583.

It is a junction number, because it is equal to n+sod(n) for n = 3851717659594 and 3851717659603.

It is not an unprimeable number, because it can be changed into a prime (3851717659661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17195168012 + ... + 17195168235.

Almost surely, 2^{3851717659664} is an apocalyptic number.

It is an amenable number.

3851717659664 is an abundant number, since it is smaller than the sum of its proper divisors (4677085729840).

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

3851717659664 is a wasteful number, since it uses less digits than its factorization.

3851717659664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34390336262 (or 34390336256 counting only the distinct ones).

The product of its digits is 228614400, while the sum is 68.

The spelling of 3851717659664 in words is "three trillion, eight hundred fifty-one billion, seven hundred seventeen million, six hundred fifty-nine thousand, six hundred sixty-four".