78223253193 has 48 divisors (see below), whose sum is σ = 115516177920. Its totient is φ = 50993712000.

The previous prime is 78223253179. The next prime is 78223253203. The reversal of 78223253193 is 39135232287.

78223253193 is a `hidden beast` number, since 7 + 8 + 2 + 2 + 325 + 319 + 3 = 666.

It is not a de Polignac number, because 78223253193 - 2²² = 78219058889 is a prime.

It is a super-2 number, since 2×78223253193² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78223253293) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 111587743 + ... + 111588443.

It is an arithmetic number, because the mean of its divisors is an integer number (2406587040).

Almost surely, 2^78223253193 is an apocalyptic number.

It is an amenable number.

78223253193 is a deficient number, since it is larger than the sum of its proper divisors (37292924727).

78223253193 is a wasteful number, since it uses less digits than its factorization.

78223253193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670 (or 1667 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The spelling of 78223253193 in words is "seventy-eight billion, two hundred twenty-three million, two hundred fifty-three thousand, one hundred ninety-three".