78810017716 has 12 divisors (see below), whose sum is σ = 142366483840. Its totient is φ = 38133879480.

The previous prime is 78810017701. The next prime is 78810017731. The reversal of 78810017716 is 61771001887.

It is an interprime number because it is at equal distance from previous prime (78810017701) and next prime (78810017731).

It is a super-2 number, since 2×78810017716² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 317782206 + ... + 317782453.

Almost surely, 2^78810017716 is an apocalyptic number.

It is an amenable number.

78810017716 is a deficient number, since it is larger than the sum of its proper divisors (63556466124).

78810017716 is a wasteful number, since it uses less digits than its factorization.

78810017716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635564694 (or 635564692 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 46.

The spelling of 78810017716 in words is "seventy-eight billion, eight hundred ten million, seventeen thousand, seven hundred sixteen".