76899994891 has 2 divisors, whose sum is σ = 76899994892. Its totient is φ = 76899994890.

The previous prime is 76899994877. The next prime is 76899994901. The reversal of 76899994891 is 19849999867.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 76899994891 - 2¹¹ = 76899992843 is a prime.

It is a super-2 number, since 2×76899994891² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (76899994861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38449997445 + 38449997446.

It is an arithmetic number, because the mean of its divisors is an integer number (38449997446).

Almost surely, 2^76899994891 is an apocalyptic number.

76899994891 is a deficient number, since it is larger than the sum of its proper divisors (1).

76899994891 is an equidigital number, since it uses as much as digits as its factorization.

76899994891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 634894848, while the sum is 79.

The spelling of 76899994891 in words is "seventy-six billion, eight hundred ninety-nine million, nine hundred ninety-four thousand, eight hundred ninety-one".