77113811 has 2 divisors, whose sum is σ = 77113812. Its totient is φ = 77113810.

The previous prime is 77113801. The next prime is 77113823. The reversal of 77113811 is 11831177.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77113811 - 2⁶ = 77113747 is a prime.

It is not a weakly prime, because it can be changed into another prime (77113801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38556905 + 38556906.

It is an arithmetic number, because the mean of its divisors is an integer number (38556906).

Almost surely, 2^77113811 is an apocalyptic number.

77113811 is a deficient number, since it is larger than the sum of its proper divisors (1).

77113811 is an equidigital number, since it uses as much as digits as its factorization.

77113811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1176, while the sum is 29.

The square root of 77113811 is about 8781.4469764385. The cubic root of 77113811 is about 425.6415887425.

Adding to 77113811 its reverse (11831177), we get a palindrome (88944988).

The spelling of 77113811 in words is "seventy-seven million, one hundred thirteen thousand, eight hundred eleven".