3716943591861 has 12 divisors (see below), whose sum is σ = 5370218870380. Its totient is φ = 2477362233600.

The previous prime is 3716943591847. The next prime is 3716943591871. The reversal of 3716943591861 is 1681953496173.

It is a happy number.

3716943591861 is a `hidden beast` number, since 3 + 7 + 16 + 9 + 435 + 9 + 186 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1877190451236 + 1839753140625 = 1370106^2 + 1356375^2 .

It is not a de Polignac number, because 3716943591861 - 2²³ = 3716935203253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3716943591871) 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, 49974190 + ... + 50048511.

Almost surely, 2^{3716943591861} is an apocalyptic number.

It is an amenable number.

3716943591861 is a deficient number, since it is larger than the sum of its proper divisors (1653275278519).

3716943591861 is a wasteful number, since it uses less digits than its factorization.

3716943591861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100026836 (or 100026833 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 63.

The spelling of 3716943591861 in words is "three trillion, seven hundred sixteen billion, nine hundred forty-three million, five hundred ninety-one thousand, eight hundred sixty-one".