11247315979 has 4 divisors (see below), whose sum is σ = 11251339984. Its totient is φ = 11243291976.

The previous prime is 11247315953. The next prime is 11247316037. The reversal of 11247315979 is 97951374211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97951374211 = 40867 ⋅2396833.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11247315979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11247385979) 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, 2007807 + ... + 2013400.

It is an arithmetic number, because the mean of its divisors is an integer number (2812834996).

Almost surely, 2^11247315979 is an apocalyptic number.

11247315979 is a deficient number, since it is larger than the sum of its proper divisors (4024005).

11247315979 is an equidigital number, since it uses as much as digits as its factorization.

11247315979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4024004.

The product of its digits is 476280, while the sum is 49.

The spelling of 11247315979 in words is "eleven billion, two hundred forty-seven million, three hundred fifteen thousand, nine hundred seventy-nine".