11551343099 has 4 divisors (see below), whose sum is σ = 11556579264. Its totient is φ = 11546106936.

The previous prime is 11551343093. The next prime is 11551343117. The reversal of 11551343099 is 99034315511.

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 11551343099 - 2¹² = 11551339003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11551343093) 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, 2614772 + ... + 2619185.

It is an arithmetic number, because the mean of its divisors is an integer number (2889144816).

Almost surely, 2^11551343099 is an apocalyptic number.

11551343099 is a deficient number, since it is larger than the sum of its proper divisors (5236165).

11551343099 is an equidigital number, since it uses as much as digits as its factorization.

11551343099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5236164.

The product of its (nonzero) digits is 72900, while the sum is 41.

The spelling of 11551343099 in words is "eleven billion, five hundred fifty-one million, three hundred forty-three thousand, ninety-nine".