78973996403 has 2 divisors, whose sum is σ = 78973996404. Its totient is φ = 78973996402.

The previous prime is 78973996379. The next prime is 78973996427. The reversal of 78973996403 is 30469937987.

It is a balanced prime because it is at equal distance from previous prime (78973996379) and next prime (78973996427).

It is a cyclic number.

It is not a de Polignac number, because 78973996403 - 2²² = 78969802099 is a prime.

It is a super-2 number, since 2×78973996403² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78973996403.

It is not a weakly prime, because it can be changed into another prime (78973996303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39486998201 + 39486998202.

It is an arithmetic number, because the mean of its divisors is an integer number (39486998202).

Almost surely, 2^78973996403 is an apocalyptic number.

78973996403 is a deficient number, since it is larger than the sum of its proper divisors (1).

78973996403 is an equidigital number, since it uses as much as digits as its factorization.

78973996403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61725888, while the sum is 65.

The spelling of 78973996403 in words is "seventy-eight billion, nine hundred seventy-three million, nine hundred ninety-six thousand, four hundred three".