11451345249 has 4 divisors (see below), whose sum is σ = 15268460336. Its totient is φ = 7634230164.

The previous prime is 11451345247. The next prime is 11451345313. The reversal of 11451345249 is 94254315411.

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.

It is not a de Polignac number, because 11451345249 - 2¹ = 11451345247 is a prime.

It is a super-2 number, since 2×11451345249² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11451345247) 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, 1908557539 + ... + 1908557544.

It is an arithmetic number, because the mean of its divisors is an integer number (3817115084).

Almost surely, 2^11451345249 is an apocalyptic number.

It is an amenable number.

11451345249 is a deficient number, since it is larger than the sum of its proper divisors (3817115087).

11451345249 is an equidigital number, since it uses as much as digits as its factorization.

11451345249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3817115086.

The product of its digits is 86400, while the sum is 39.

The spelling of 11451345249 in words is "eleven billion, four hundred fifty-one million, three hundred forty-five thousand, two hundred forty-nine".