78735518337 has 12 divisors (see below), whose sum is σ = 122120396016. Its totient is φ = 44991724680.

The previous prime is 78735518333. The next prime is 78735518339. The reversal of 78735518337 is 73381553787.

It is not a de Polignac number, because 78735518337 - 2² = 78735518333 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (78735518333) 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, 267807739 + ... + 267808032.

It is an arithmetic number, because the mean of its divisors is an integer number (10176699668).

Almost surely, 2^78735518337 is an apocalyptic number.

It is an amenable number.

78735518337 is a deficient number, since it is larger than the sum of its proper divisors (43384877679).

78735518337 is a wasteful number, since it uses less digits than its factorization.

78735518337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535615788 (or 535615781 counting only the distinct ones).

The product of its digits is 14817600, while the sum is 57.

The spelling of 78735518337 in words is "seventy-eight billion, seven hundred thirty-five million, five hundred eighteen thousand, three hundred thirty-seven".