78583628731 has 4 divisors (see below), whose sum is σ = 78633779392. Its totient is φ = 78533478072.

The previous prime is 78583628713. The next prime is 78583628801. The reversal of 78583628731 is 13782638587.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78583628731 - 2⁵ = 78583628699 is a prime.

It is a super-2 number, since 2×78583628731² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78583628231) 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, 25072980 + ... + 25076113.

It is an arithmetic number, because the mean of its divisors is an integer number (19658444848).

Almost surely, 2^78583628731 is an apocalyptic number.

78583628731 is a deficient number, since it is larger than the sum of its proper divisors (50150661).

78583628731 is a wasteful number, since it uses less digits than its factorization.

78583628731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50150660.

The product of its digits is 13547520, while the sum is 58.

The spelling of 78583628731 in words is "seventy-eight billion, five hundred eighty-three million, six hundred twenty-eight thousand, seven hundred thirty-one".