11512343321455 has 4 divisors (see below), whose sum is σ = 13814811985752. Its totient is φ = 9209874657160.

The previous prime is 11512343321431. The next prime is 11512343321471. The reversal of 11512343321455 is 55412334321511.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11512343321455 - 2³¹ = 11510195837807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1151234332141 + ... + 1151234332150.

It is an arithmetic number, because the mean of its divisors is an integer number (3453702996438).

Almost surely, 2^{11512343321455} is an apocalyptic number.

11512343321455 is a deficient number, since it is larger than the sum of its proper divisors (2302468664297).

11512343321455 is an equidigital number, since it uses as much as digits as its factorization.

11512343321455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2302468664296.

The product of its digits is 216000, while the sum is 40.

Adding to 11512343321455 its reverse (55412334321511), we get a palindrome (66924677642966).

The spelling of 11512343321455 in words is "eleven trillion, five hundred twelve billion, three hundred forty-three million, three hundred twenty-one thousand, four hundred fifty-five".