78820804037 has 16 divisors (see below), whose sum is σ = 82786832832. Its totient is φ = 74968882560.

The previous prime is 78820804033. The next prime is 78820804123. The reversal of 78820804037 is 73040802887.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 78820804037 - 2² = 78820804033 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78820803982 and 78820804000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78820804033) 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, 203393 + ... + 446105.

It is an arithmetic number, because the mean of its divisors is an integer number (5174177052).

Almost surely, 2^78820804037 is an apocalyptic number.

It is an amenable number.

78820804037 is a deficient number, since it is larger than the sum of its proper divisors (3966028795).

78820804037 is a wasteful number, since it uses less digits than its factorization.

78820804037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242948.

The product of its (nonzero) digits is 602112, while the sum is 47.

The spelling of 78820804037 in words is "seventy-eight billion, eight hundred twenty million, eight hundred four thousand, thirty-seven".