78623618072 has 32 divisors (see below), whose sum is σ = 149504745600. Its totient is φ = 38756162304.

The previous prime is 78623618041. The next prime is 78623618107. The reversal of 78623618072 is 27081632687.

It is a self number, because there is not a number n which added to its sum of digits gives 78623618072.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1347929 + ... + 1405047.

It is an arithmetic number, because the mean of its divisors is an integer number (4672023300).

Almost surely, 2^78623618072 is an apocalyptic number.

It is an amenable number.

78623618072 is a deficient number, since it is larger than the sum of its proper divisors (70881127528).

78623618072 is a wasteful number, since it uses less digits than its factorization.

78623618072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59555 (or 59551 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 50.

The spelling of 78623618072 in words is "seventy-eight billion, six hundred twenty-three million, six hundred eighteen thousand, seventy-two".