11847515413 has 2 divisors, whose sum is σ = 11847515414. Its totient is φ = 11847515412.

The previous prime is 11847515411. The next prime is 11847515437. The reversal of 11847515413 is 31451574811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10907295844 + 940219569 = 104438^2 + 30663^2 .

It is a cyclic number.

It is not a de Polignac number, because 11847515413 - 2¹ = 11847515411 is a prime.

It is a super-2 number, since 2×11847515413² (a number of 21 digits) contains 22 as substring.

Together with 11847515411, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11847515411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5923757706 + 5923757707.

It is an arithmetic number, because the mean of its divisors is an integer number (5923757707).

Almost surely, 2^11847515413 is an apocalyptic number.

It is an amenable number.

11847515413 is a deficient number, since it is larger than the sum of its proper divisors (1).

11847515413 is an equidigital number, since it uses as much as digits as its factorization.

11847515413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67200, while the sum is 40.

The spelling of 11847515413 in words is "eleven billion, eight hundred forty-seven million, five hundred fifteen thousand, four hundred thirteen".