78103839164 has 96 divisors (see below), whose sum is σ = 154770631680. Its totient is φ = 34242953472.

The previous prime is 78103839119. The next prime is 78103839169. The reversal of 78103839164 is 46193830187.

It is a super-2 number, since 2×78103839164² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78103839169) 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 31 ways as a sum of consecutive naturals, for example, 49463327 + ... + 49464905.

It is an arithmetic number, because the mean of its divisors is an integer number (1612194080).

Almost surely, 2^78103839164 is an apocalyptic number.

78103839164 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

78103839164 is a deficient number, since it is larger than the sum of its proper divisors (76666792516).

78103839164 is a wasteful number, since it uses less digits than its factorization.

78103839164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2227 (or 2225 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 78103839164 in words is "seventy-eight billion, one hundred three million, eight hundred thirty-nine thousand, one hundred sixty-four".