78850115082431 has 32 divisors (see below), whose sum is σ = 99692898923520. Its totient is φ = 60575263257600.

The previous prime is 78850115082421. The next prime is 78850115082439. The reversal of 78850115082431 is 13428051105887.

It is not a de Polignac number, because 78850115082431 - 2³⁰ = 78849041340607 is a prime.

It is a super-2 number, since 2×78850115082431² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78850115082439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 631906415 + ... + 632031183.

It is an arithmetic number, because the mean of its divisors is an integer number (3115403091360).

Almost surely, 2^{78850115082431} is an apocalyptic number.

78850115082431 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

78850115082431 is a deficient number, since it is larger than the sum of its proper divisors (20842783841089).

78850115082431 is a wasteful number, since it uses less digits than its factorization.

78850115082431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240455.

The product of its (nonzero) digits is 2150400, while the sum is 53.

The spelling of 78850115082431 in words is "seventy-eight trillion, eight hundred fifty billion, one hundred fifteen million, eighty-two thousand, four hundred thirty-one".