78727195393 has 32 divisors (see below), whose sum is σ = 102046521600. Its totient is φ = 60188244480.

The previous prime is 78727195319. The next prime is 78727195403. The reversal of 78727195393 is 39359172787.

It is not a de Polignac number, because 78727195393 - 2¹⁷ = 78727064321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78727195303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3121 + ... + 396817.

It is an arithmetic number, because the mean of its divisors is an integer number (3188953800).

Almost surely, 2^78727195393 is an apocalyptic number.

It is an amenable number.

78727195393 is a deficient number, since it is larger than the sum of its proper divisors (23319326207).

78727195393 is a wasteful number, since it uses less digits than its factorization.

78727195393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393782 (or 393768 counting only the distinct ones).

The product of its digits is 20003760, while the sum is 61.

The spelling of 78727195393 in words is "seventy-eight billion, seven hundred twenty-seven million, one hundred ninety-five thousand, three hundred ninety-three".