78196970623 has 2 divisors, whose sum is σ = 78196970624. Its totient is φ = 78196970622.

The previous prime is 78196970591. The next prime is 78196970681. The reversal of 78196970623 is 32607969187.

It is an a-pointer prime, because the next prime (78196970681) can be obtained adding 78196970623 to its sum of digits (58).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78196970623 - 2⁵ = 78196970591 is a prime.

It is a super-2 number, since 2×78196970623² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78196971623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39098485311 + 39098485312.

It is an arithmetic number, because the mean of its divisors is an integer number (39098485312).

Almost surely, 2^78196970623 is an apocalyptic number.

78196970623 is a deficient number, since it is larger than the sum of its proper divisors (1).

78196970623 is an equidigital number, since it uses as much as digits as its factorization.

78196970623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6858432, while the sum is 58.

The spelling of 78196970623 in words is "seventy-eight billion, one hundred ninety-six million, nine hundred seventy thousand, six hundred twenty-three".