11927471291 has 2 divisors, whose sum is σ = 11927471292. Its totient is φ = 11927471290.

The previous prime is 11927471287. The next prime is 11927471351. The reversal of 11927471291 is 19217472911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11927471291 - 2² = 11927471287 is a prime.

It is not a weakly prime, because it can be changed into another prime (11927471191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5963735645 + 5963735646.

It is an arithmetic number, because the mean of its divisors is an integer number (5963735646).

Almost surely, 2^11927471291 is an apocalyptic number.

11927471291 is a deficient number, since it is larger than the sum of its proper divisors (1).

11927471291 is an equidigital number, since it uses as much as digits as its factorization.

11927471291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 44.

The spelling of 11927471291 in words is "eleven billion, nine hundred twenty-seven million, four hundred seventy-one thousand, two hundred ninety-one".