76993277969 has 2 divisors, whose sum is σ = 76993277970. Its totient is φ = 76993277968.

The previous prime is 76993277947. The next prime is 76993277971. The reversal of 76993277969 is 96977239967.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75790090000 + 1203187969 = 275300^2 + 34687^2 .

It is a cyclic number.

It is not a de Polignac number, because 76993277969 - 2¹⁶ = 76993212433 is a prime.

It is a super-2 number, since 2×76993277969² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 76993277971, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 76993277896 and 76993277905.

It is not a weakly prime, because it can be changed into another prime (76993277909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38496638984 + 38496638985.

It is an arithmetic number, because the mean of its divisors is an integer number (38496638985).

Almost surely, 2^76993277969 is an apocalyptic number.

It is an amenable number.

76993277969 is a deficient number, since it is larger than the sum of its proper divisors (1).

76993277969 is an equidigital number, since it uses as much as digits as its factorization.

76993277969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 486091368, while the sum is 74.

The spelling of 76993277969 in words is "seventy-six billion, nine hundred ninety-three million, two hundred seventy-seven thousand, nine hundred sixty-nine".