78820905038 has 16 divisors (see below), whose sum is σ = 119149390800. Its totient is φ = 39104520000.

The previous prime is 78820905019. The next prime is 78820905041. The reversal of 78820905038 is 83050902887.

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, 2736938 + ... + 2765586.

It is an arithmetic number, because the mean of its divisors is an integer number (7446836925).

Almost surely, 2^78820905038 is an apocalyptic number.

78820905038 is a deficient number, since it is larger than the sum of its proper divisors (40328485762).

78820905038 is a wasteful number, since it uses less digits than its factorization.

78820905038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39283.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 78820905038 in words is "seventy-eight billion, eight hundred twenty million, nine hundred five thousand, thirty-eight".