78368931422 has 4 divisors (see below), whose sum is σ = 117553397136. Its totient is φ = 39184465710.

The previous prime is 78368931383. The next prime is 78368931451. The reversal of 78368931422 is 22413986387.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×78368931422² (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 (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19592232854 + ... + 19592232857.

It is an arithmetic number, because the mean of its divisors is an integer number (29388349284).

Almost surely, 2^78368931422 is an apocalyptic number.

78368931422 is a deficient number, since it is larger than the sum of its proper divisors (39184465714).

78368931422 is a wasteful number, since it uses less digits than its factorization.

78368931422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39184465713.

The product of its digits is 3483648, while the sum is 53.

The spelling of 78368931422 in words is "seventy-eight billion, three hundred sixty-eight million, nine hundred thirty-one thousand, four hundred twenty-two".