78275983929 has 32 divisors (see below), whose sum is σ = 122756788224. Its totient is φ = 43739810880.

The previous prime is 78275983873. The next prime is 78275983943. The reversal of 78275983929 is 92938957287.

It is not a de Polignac number, because 78275983929 - 2⁹ = 78275983417 is a prime.

It is a super-2 number, since 2×78275983929² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78275983729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 264514 + ... + 475940.

It is an arithmetic number, because the mean of its divisors is an integer number (3836149632).

Almost surely, 2^78275983929 is an apocalyptic number.

It is an amenable number.

78275983929 is a deficient number, since it is larger than the sum of its proper divisors (44480804295).

78275983929 is a wasteful number, since it uses less digits than its factorization.

78275983929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212317.

The product of its digits is 137168640, while the sum is 69.

The spelling of 78275983929 in words is "seventy-eight billion, two hundred seventy-five million, nine hundred eighty-three thousand, nine hundred twenty-nine".