11657114247 has 4 divisors (see below), whose sum is σ = 15542819000. Its totient is φ = 7771409496.

The previous prime is 11657114237. The next prime is 11657114263. The reversal of 11657114247 is 74241175611.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-11657114247 is a prime.

It is a super-2 number, since 2×11657114247² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11657114237) 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, 1942852372 + ... + 1942852377.

It is an arithmetic number, because the mean of its divisors is an integer number (3885704750).

Almost surely, 2^11657114247 is an apocalyptic number.

11657114247 is a deficient number, since it is larger than the sum of its proper divisors (3885704753).

11657114247 is an equidigital number, since it uses as much as digits as its factorization.

11657114247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3885704752.

The product of its digits is 47040, while the sum is 39.

Adding to 11657114247 its reverse (74241175611), we get a palindrome (85898289858).

The spelling of 11657114247 in words is "eleven billion, six hundred fifty-seven million, one hundred fourteen thousand, two hundred forty-seven".