77163391131 has 16 divisors (see below), whose sum is σ = 103191291168. Its totient is φ = 51289056000.

The previous prime is 77163391121. The next prime is 77163391141. The reversal of 77163391131 is 13119336177.

It is an interprime number because it is at equal distance from previous prime (77163391121) and next prime (77163391141).

It is not a de Polignac number, because 77163391131 - 2⁵ = 77163391099 is a prime.

It is a super-2 number, since 2×77163391131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77163391121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1762041 + ... + 1805301.

It is an arithmetic number, because the mean of its divisors is an integer number (6449455698).

Almost surely, 2^77163391131 is an apocalyptic number.

77163391131 is a deficient number, since it is larger than the sum of its proper divisors (26027900037).

77163391131 is a wasteful number, since it uses less digits than its factorization.

77163391131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45022.

The product of its digits is 71442, while the sum is 42.

The spelling of 77163391131 in words is "seventy-seven billion, one hundred sixty-three million, three hundred ninety-one thousand, one hundred thirty-one".