78317494013 has 8 divisors (see below), whose sum is σ = 85635501696. Its totient is φ = 71032525600.

The previous prime is 78317494001. The next prime is 78317494019. The reversal of 78317494013 is 31049471387.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78317494013 - 2¹⁰ = 78317492989 is a prime.

It is a super-2 number, since 2×78317494013² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78317494019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8254856 + ... + 8264337.

It is an arithmetic number, because the mean of its divisors is an integer number (10704437712).

Almost surely, 2^78317494013 is an apocalyptic number.

It is an amenable number.

78317494013 is a deficient number, since it is larger than the sum of its proper divisors (7318007683).

78317494013 is a wasteful number, since it uses less digits than its factorization.

78317494013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16519635.

The product of its (nonzero) digits is 508032, while the sum is 47.

The spelling of 78317494013 in words is "seventy-eight billion, three hundred seventeen million, four hundred ninety-four thousand, thirteen".