78935127478 has 16 divisors (see below), whose sum is σ = 119339700480. Its totient is φ = 39156132456.

The previous prime is 78935127461. The next prime is 78935127511. The reversal of 78935127478 is 87472153987.

It is a super-2 number, since 2×78935127478² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 51258 + ... + 400621.

It is an arithmetic number, because the mean of its divisors is an integer number (7458731280).

Almost surely, 2^78935127478 is an apocalyptic number.

78935127478 is a deficient number, since it is larger than the sum of its proper divisors (40404573002).

78935127478 is a wasteful number, since it uses less digits than its factorization.

78935127478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452571.

The product of its digits is 23708160, while the sum is 61.

The spelling of 78935127478 in words is "seventy-eight billion, nine hundred thirty-five million, one hundred twenty-seven thousand, four hundred seventy-eight".