11711977523 has 2 divisors, whose sum is σ = 11711977524. Its totient is φ = 11711977522.

The previous prime is 11711977493. The next prime is 11711977561. The reversal of 11711977523 is 32577911711.

It is a weak prime.

It is an emirp because it is prime and its reverse (32577911711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11711977523 - 2¹⁰ = 11711976499 is a prime.

It is not a weakly prime, because it can be changed into another prime (11711977573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5855988761 + 5855988762.

It is an arithmetic number, because the mean of its divisors is an integer number (5855988762).

Almost surely, 2^11711977523 is an apocalyptic number.

11711977523 is a deficient number, since it is larger than the sum of its proper divisors (1).

11711977523 is an equidigital number, since it uses as much as digits as its factorization.

11711977523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92610, while the sum is 44.

The spelling of 11711977523 in words is "eleven billion, seven hundred eleven million, nine hundred seventy-seven thousand, five hundred twenty-three".