11321374657 has 4 divisors (see below), whose sum is σ = 11324647360. Its totient is φ = 11318101956.

The previous prime is 11321374613. The next prime is 11321374661. The reversal of 11321374657 is 75647312311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75647312311 = 31 ⋅2440235881.

It is a cyclic number.

It is not a de Polignac number, because 11321374657 - 2⁷ = 11321374529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11321374607) 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, 1631157 + ... + 1638082.

It is an arithmetic number, because the mean of its divisors is an integer number (2831161840).

Almost surely, 2^11321374657 is an apocalyptic number.

It is an amenable number.

11321374657 is a deficient number, since it is larger than the sum of its proper divisors (3272703).

11321374657 is an equidigital number, since it uses as much as digits as its factorization.

11321374657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3272702.

The product of its digits is 105840, while the sum is 40.

Adding to 11321374657 its reverse (75647312311), we get a palindrome (86968686968).

The spelling of 11321374657 in words is "eleven billion, three hundred twenty-one million, three hundred seventy-four thousand, six hundred fifty-seven".