76645454239 has 2 divisors, whose sum is σ = 76645454240. Its totient is φ = 76645454238.

The previous prime is 76645454209. The next prime is 76645454251. The reversal of 76645454239 is 93245454667.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 76645454239 - 2²⁷ = 76511236511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76645454239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76645454209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38322727119 + 38322727120.

It is an arithmetic number, because the mean of its divisors is an integer number (38322727120).

Almost surely, 2^76645454239 is an apocalyptic number.

76645454239 is a deficient number, since it is larger than the sum of its proper divisors (1).

76645454239 is an equidigital number, since it uses as much as digits as its factorization.

76645454239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21772800, while the sum is 55.

The spelling of 76645454239 in words is "seventy-six billion, six hundred forty-five million, four hundred fifty-four thousand, two hundred thirty-nine".