12771000291 has 32 divisors (see below), whose sum is σ = 19904281600. Its totient is φ = 7280606592.

The previous prime is 12771000283. The next prime is 12771000293. The reversal of 12771000291 is 19200017721.

It is a happy number.

It is not a de Polignac number, because 12771000291 - 2³ = 12771000283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12771000293) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 431226 + ... + 459888.

It is an arithmetic number, because the mean of its divisors is an integer number (622008800).

Almost surely, 2^12771000291 is an apocalyptic number.

12771000291 is a deficient number, since it is larger than the sum of its proper divisors (7133281309).

12771000291 is an equidigital number, since it uses as much as digits as its factorization.

12771000291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29120 (or 29106 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 30.

The spelling of 12771000291 in words is "twelve billion, seven hundred seventy-one million, two hundred ninety-one", and thus it is an aban number.