78193982758 has 16 divisors (see below), whose sum is σ = 117725515776. Its totient is φ = 38952191880.

The previous prime is 78193982729. The next prime is 78193982759. The reversal of 78193982758 is 85728939187.

It is a super-2 number, since 2×78193982758² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78193982693 and 78193982702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78193982759) by changing a digit.

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, 6164763 + ... + 6177433.

It is an arithmetic number, because the mean of its divisors is an integer number (7357844736).

Almost surely, 2^78193982758 is an apocalyptic number.

78193982758 is a deficient number, since it is larger than the sum of its proper divisors (39531533018).

78193982758 is a wasteful number, since it uses less digits than its factorization.

78193982758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23859.

The product of its digits is 60963840, while the sum is 67.

The spelling of 78193982758 in words is "seventy-eight billion, one hundred ninety-three million, nine hundred eighty-two thousand, seven hundred fifty-eight".