78920291793603 has 16 divisors (see below), whose sum is σ = 113343634347776. Its totient is φ = 48556823531040.

The previous prime is 78920291793599. The next prime is 78920291793743. The reversal of 78920291793603 is 30639719202987.

It is not a de Polignac number, because 78920291793603 - 2² = 78920291793599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78920291793403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197920783 + ... + 198319128.

It is an arithmetic number, because the mean of its divisors is an integer number (7083977146736).

Almost surely, 2^{78920291793603} is an apocalyptic number.

78920291793603 is a deficient number, since it is larger than the sum of its proper divisors (34423342554173).

78920291793603 is a wasteful number, since it uses less digits than its factorization.

78920291793603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396245034.

The product of its (nonzero) digits is 61725888, while the sum is 66.

The spelling of 78920291793603 in words is "seventy-eight trillion, nine hundred twenty billion, two hundred ninety-one million, seven hundred ninety-three thousand, six hundred three".