77367111131 has 2 divisors, whose sum is σ = 77367111132. Its totient is φ = 77367111130.

The previous prime is 77367111113. The next prime is 77367111137. The reversal of 77367111131 is 13111176377.

Together with previous prime (77367111113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77367111131 - 2¹⁸ = 77366848987 is a prime.

It is a super-2 number, since 2×77367111131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (77367111137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38683555565 + 38683555566.

It is an arithmetic number, because the mean of its divisors is an integer number (38683555566).

Almost surely, 2^77367111131 is an apocalyptic number.

77367111131 is a deficient number, since it is larger than the sum of its proper divisors (1).

77367111131 is an equidigital number, since it uses as much as digits as its factorization.

77367111131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18522, while the sum is 38.

The spelling of 77367111131 in words is "seventy-seven billion, three hundred sixty-seven million, one hundred eleven thousand, one hundred thirty-one".