11856291313 has 2 divisors, whose sum is σ = 11856291314. Its totient is φ = 11856291312.

The previous prime is 11856291301. The next prime is 11856291361. The reversal of 11856291313 is 31319265811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11798956129 + 57335184 = 108623^2 + 7572^2 .

It is an emirp because it is prime and its reverse (31319265811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11856291313 - 2²¹ = 11854194161 is a prime.

It is not a weakly prime, because it can be changed into another prime (11856294313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5928145656 + 5928145657.

It is an arithmetic number, because the mean of its divisors is an integer number (5928145657).

Almost surely, 2^11856291313 is an apocalyptic number.

It is an amenable number.

11856291313 is a deficient number, since it is larger than the sum of its proper divisors (1).

11856291313 is an equidigital number, since it uses as much as digits as its factorization.

11856291313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 40.

The spelling of 11856291313 in words is "eleven billion, eight hundred fifty-six million, two hundred ninety-one thousand, three hundred thirteen".