78231835383 has 16 divisors (see below), whose sum is σ = 115956535296. Its totient is φ = 46589677920.

The previous prime is 78231835337. The next prime is 78231835397. The reversal of 78231835383 is 38353813287.

It is not a de Polignac number, because 78231835383 - 2²¹ = 78229738231 is a prime.

It is a super-2 number, since 2×78231835383² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78231835303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32352735 + ... + 32355152.

It is an arithmetic number, because the mean of its divisors is an integer number (7247283456).

Almost surely, 2^78231835383 is an apocalyptic number.

78231835383 is a deficient number, since it is larger than the sum of its proper divisors (37724699913).

78231835383 is a wasteful number, since it uses less digits than its factorization.

78231835383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64707934.

The product of its digits is 2903040, while the sum is 51.

The spelling of 78231835383 in words is "seventy-eight billion, two hundred thirty-one million, eight hundred thirty-five thousand, three hundred eighty-three".