76889184761 has 2 divisors, whose sum is σ = 76889184762. Its totient is φ = 76889184760.

The previous prime is 76889184751. The next prime is 76889184763. The reversal of 76889184761 is 16748198867.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61531779136 + 15357405625 = 248056^2 + 123925^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76889184761 is a prime.

It is a super-2 number, since 2×76889184761² (a number of 23 digits) contains 22 as substring.

Together with 76889184763, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (76889184763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38444592380 + 38444592381.

It is an arithmetic number, because the mean of its divisors is an integer number (38444592381).

Almost surely, 2^76889184761 is an apocalyptic number.

It is an amenable number.

76889184761 is a deficient number, since it is larger than the sum of its proper divisors (1).

76889184761 is an equidigital number, since it uses as much as digits as its factorization.

76889184761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32514048, while the sum is 65.

The spelling of 76889184761 in words is "seventy-six billion, eight hundred eighty-nine million, one hundred eighty-four thousand, seven hundred sixty-one".