11917290877 has 2 divisors, whose sum is σ = 11917290878. Its totient is φ = 11917290876.

The previous prime is 11917290829. The next prime is 11917290881. The reversal of 11917290877 is 77809271911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9550371076 + 2366919801 = 97726^2 + 48651^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11917290877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11917290577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5958645438 + 5958645439.

It is an arithmetic number, because the mean of its divisors is an integer number (5958645439).

Almost surely, 2^11917290877 is an apocalyptic number.

It is an amenable number.

11917290877 is a deficient number, since it is larger than the sum of its proper divisors (1).

11917290877 is an equidigital number, since it uses as much as digits as its factorization.

11917290877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 444528, while the sum is 52.

The spelling of 11917290877 in words is "eleven billion, nine hundred seventeen million, two hundred ninety thousand, eight hundred seventy-seven".