11451234899 has 4 divisors (see below), whose sum is σ = 12332099136. Its totient is φ = 10570370664.

The previous prime is 11451234877. The next prime is 11451234913. The reversal of 11451234899 is 99843215411.

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 11451234899 - 2¹⁶ = 11451169363 is a prime.

It is a super-2 number, since 2×11451234899² (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 (11451234859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440432099 + ... + 440432124.

It is an arithmetic number, because the mean of its divisors is an integer number (3083024784).

Almost surely, 2^11451234899 is an apocalyptic number.

11451234899 is a deficient number, since it is larger than the sum of its proper divisors (880864237).

11451234899 is an equidigital number, since it uses as much as digits as its factorization.

11451234899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880864236.

The product of its digits is 311040, while the sum is 47.

The spelling of 11451234899 in words is "eleven billion, four hundred fifty-one million, two hundred thirty-four thousand, eight hundred ninety-nine".