76624520789 has 2 divisors, whose sum is σ = 76624520790. Its totient is φ = 76624520788.

The previous prime is 76624520779. The next prime is 76624520803. The reversal of 76624520789 is 98702542667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49915155889 + 26709364900 = 223417^2 + 163430^2 .

It is a cyclic number.

It is not a de Polignac number, because 76624520789 - 2¹⁶ = 76624455253 is a prime.

It is a super-2 number, since 2×76624520789² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76624520729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38312260394 + 38312260395.

It is an arithmetic number, because the mean of its divisors is an integer number (38312260395).

Almost surely, 2^76624520789 is an apocalyptic number.

It is an amenable number.

76624520789 is a deficient number, since it is larger than the sum of its proper divisors (1).

76624520789 is an equidigital number, since it uses as much as digits as its factorization.

76624520789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10160640, while the sum is 56.

The spelling of 76624520789 in words is "seventy-six billion, six hundred twenty-four million, five hundred twenty thousand, seven hundred eighty-nine".