11812771283 has 4 divisors (see below), whose sum is σ = 12507640200. Its totient is φ = 11117902368.

The previous prime is 11812771279. The next prime is 11812771297. The reversal of 11812771283 is 38217721811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38217721811 = 17 ⋅2248101283.

It is a cyclic number.

It is not a de Polignac number, because 11812771283 - 2² = 11812771279 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11812771283.

It is not an unprimeable number, because it can be changed into a prime (11812771213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347434433 + ... + 347434466.

It is an arithmetic number, because the mean of its divisors is an integer number (3126910050).

Almost surely, 2^11812771283 is an apocalyptic number.

11812771283 is a deficient number, since it is larger than the sum of its proper divisors (694868917).

11812771283 is an equidigital number, since it uses as much as digits as its factorization.

11812771283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694868916.

The product of its digits is 37632, while the sum is 41.

The spelling of 11812771283 in words is "eleven billion, eight hundred twelve million, seven hundred seventy-one thousand, two hundred eighty-three".