78519055031 has 16 divisors (see below), whose sum is σ = 84231590400. Its totient is φ = 72928971648.

The previous prime is 78519055007. The next prime is 78519055123. The reversal of 78519055031 is 13055091587.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 78519055031 - 2⁶ = 78519054967 is a prime.

It is a super-2 number, since 2×78519055031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78519055001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2945360 + ... + 2971898.

It is an arithmetic number, because the mean of its divisors is an integer number (5264474400).

Almost surely, 2^78519055031 is an apocalyptic number.

78519055031 is a deficient number, since it is larger than the sum of its proper divisors (5712535369).

78519055031 is a wasteful number, since it uses less digits than its factorization.

78519055031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28838.

The product of its (nonzero) digits is 189000, while the sum is 44.

The spelling of 78519055031 in words is "seventy-eight billion, five hundred nineteen million, fifty-five thousand, thirty-one".