78235703233 has 4 divisors (see below), whose sum is σ = 78413917120. Its totient is φ = 78057489348.

The previous prime is 78235703219. The next prime is 78235703251. The reversal of 78235703233 is 33230753287.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78235703233 - 2¹⁷ = 78235572161 is a prime.

It is a super-2 number, since 2×78235703233² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78235703233.

It is not an unprimeable number, because it can be changed into a prime (78235703333) 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, 89106285 + ... + 89107162.

It is an arithmetic number, because the mean of its divisors is an integer number (19603479280).

Almost surely, 2^78235703233 is an apocalyptic number.

It is an amenable number.

78235703233 is a deficient number, since it is larger than the sum of its proper divisors (178213887).

78235703233 is a wasteful number, since it uses less digits than its factorization.

78235703233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178213886.

The product of its (nonzero) digits is 635040, while the sum is 43.

The spelling of 78235703233 in words is "seventy-eight billion, two hundred thirty-five million, seven hundred three thousand, two hundred thirty-three".