78316254623 has 2 divisors, whose sum is σ = 78316254624. Its totient is φ = 78316254622.

The previous prime is 78316254571. The next prime is 78316254631. The reversal of 78316254623 is 32645261387.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78316254623 - 2³⁰ = 77242512799 is a prime.

It is a super-2 number, since 2×78316254623² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78316254923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39158127311 + 39158127312.

It is an arithmetic number, because the mean of its divisors is an integer number (39158127312).

Almost surely, 2^78316254623 is an apocalyptic number.

78316254623 is a deficient number, since it is larger than the sum of its proper divisors (1).

78316254623 is an equidigital number, since it uses as much as digits as its factorization.

78316254623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 47.

The spelling of 78316254623 in words is "seventy-eight billion, three hundred sixteen million, two hundred fifty-four thousand, six hundred twenty-three".