78520801233 has 16 divisors (see below), whose sum is σ = 119757326336. Its totient is φ = 44829061200.

The previous prime is 78520801223. The next prime is 78520801243. The reversal of 78520801233 is 33210802587.

It is an interprime number because it is at equal distance from previous prime (78520801223) and next prime (78520801243).

It is not a de Polignac number, because 78520801233 - 2²⁸ = 78252365777 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78520801191 and 78520801200.

It is not an unprimeable number, because it can be changed into a prime (78520801223) 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, 1641193 + ... + 1688358.

It is an arithmetic number, because the mean of its divisors is an integer number (7484832896).

Almost surely, 2^78520801233 is an apocalyptic number.

It is an amenable number.

78520801233 is a deficient number, since it is larger than the sum of its proper divisors (41236525103).

78520801233 is a wasteful number, since it uses less digits than its factorization.

78520801233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3330684.

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 78520801233 in words is "seventy-eight billion, five hundred twenty million, eight hundred one thousand, two hundred thirty-three".