11147127457 has 4 divisors (see below), whose sum is σ = 11147344516. Its totient is φ = 11146910400.

The previous prime is 11147127377. The next prime is 11147127473. The reversal of 11147127457 is 75472174111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75472174111 = 311 ⋅242675801.

It can be written as a sum of positive squares in 2 ways, for example, as 2527676176 + 8619451281 = 50276^2 + 92841^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11147127457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11147127557) 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, 16573 + ... + 150229.

It is an arithmetic number, because the mean of its divisors is an integer number (2786836129).

Almost surely, 2^11147127457 is an apocalyptic number.

It is an amenable number.

11147127457 is a deficient number, since it is larger than the sum of its proper divisors (217059).

11147127457 is an equidigital number, since it uses as much as digits as its factorization.

11147127457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217058.

The product of its digits is 54880, while the sum is 40.

The spelling of 11147127457 in words is "eleven billion, one hundred forty-seven million, one hundred twenty-seven thousand, four hundred fifty-seven".