11557000423247 has 4 divisors (see below), whose sum is σ = 11557048319376. Its totient is φ = 11556952527120.

The previous prime is 11557000423183. The next prime is 11557000423289. The reversal of 11557000423247 is 74232400075511.

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

It is a cyclic number.

It is not a de Polignac number, because 11557000423247 - 2⁶ = 11557000423183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11557000423447) 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, 23584283 + ... + 24069324.

It is an arithmetic number, because the mean of its divisors is an integer number (2889262079844).

Almost surely, 2^{11557000423247} is an apocalyptic number.

11557000423247 is a deficient number, since it is larger than the sum of its proper divisors (47896129).

11557000423247 is an equidigital number, since it uses as much as digits as its factorization.

11557000423247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47896128.

The product of its (nonzero) digits is 235200, while the sum is 41.

Adding to 11557000423247 its reverse (74232400075511), we get a palindrome (85789400498758).

The spelling of 11557000423247 in words is "eleven trillion, five hundred fifty-seven billion, four hundred twenty-three thousand, two hundred forty-seven".