78975591403 has 2 divisors, whose sum is σ = 78975591404. Its totient is φ = 78975591402.

The previous prime is 78975591389. The next prime is 78975591421. The reversal of 78975591403 is 30419557987.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78975591403 - 2⁹ = 78975590891 is a prime.

It is not a weakly prime, because it can be changed into another prime (78975591433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39487795701 + 39487795702.

It is an arithmetic number, because the mean of its divisors is an integer number (39487795702).

Almost surely, 2^78975591403 is an apocalyptic number.

78975591403 is a deficient number, since it is larger than the sum of its proper divisors (1).

78975591403 is an equidigital number, since it uses as much as digits as its factorization.

78975591403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9525600, while the sum is 58.

The spelling of 78975591403 in words is "seventy-eight billion, nine hundred seventy-five million, five hundred ninety-one thousand, four hundred three".