11847787277 has 2 divisors, whose sum is σ = 11847787278. Its totient is φ = 11847787276.

The previous prime is 11847787249. The next prime is 11847787309. The reversal of 11847787277 is 77278774811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9594006601 + 2253780676 = 97949^2 + 47474^2 .

It is a cyclic number.

It is not a de Polignac number, because 11847787277 - 2²⁸ = 11579351821 is a prime.

It is a super-2 number, since 2×11847787277² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11847787207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5923893638 + 5923893639.

It is an arithmetic number, because the mean of its divisors is an integer number (5923893639).

Almost surely, 2^11847787277 is an apocalyptic number.

It is an amenable number.

11847787277 is a deficient number, since it is larger than the sum of its proper divisors (1).

11847787277 is an equidigital number, since it uses as much as digits as its factorization.

11847787277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8605184, while the sum is 59.

The spelling of 11847787277 in words is "eleven billion, eight hundred forty-seven million, seven hundred eighty-seven thousand, two hundred seventy-seven".