78990620504 has 16 divisors (see below), whose sum is σ = 148110627600. Its totient is φ = 39494453152.

The previous prime is 78990620503. The next prime is 78990620519. The reversal of 78990620504 is 40502609987.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78990620503) 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 3 ways as a sum of consecutive naturals, for example, 463034 + ... + 610230.

It is an arithmetic number, because the mean of its divisors is an integer number (9256914225).

Almost surely, 2^78990620504 is an apocalyptic number.

It is an amenable number.

78990620504 is a deficient number, since it is larger than the sum of its proper divisors (69120007096).

78990620504 is a wasteful number, since it uses less digits than its factorization.

78990620504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214282 (or 214278 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 78990620504 in words is "seventy-eight billion, nine hundred ninety million, six hundred twenty thousand, five hundred four".