11051541512551 has 4 divisors (see below), whose sum is σ = 11132209698912. Its totient is φ = 10970873326192.

The previous prime is 11051541512521. The next prime is 11051541512639. The reversal of 11051541512551 is 15521514515011.

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 11051541512551 - 2²⁵ = 11051507958119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11051541512551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11051541512521) 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, 40334092975 + ... + 40334093248.

It is an arithmetic number, because the mean of its divisors is an integer number (2783052424728).

Almost surely, 2^{11051541512551} is an apocalyptic number.

11051541512551 is a deficient number, since it is larger than the sum of its proper divisors (80668186361).

11051541512551 is an equidigital number, since it uses as much as digits as its factorization.

11051541512551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80668186360.

The product of its (nonzero) digits is 25000, while the sum is 37.

The spelling of 11051541512551 in words is "eleven trillion, fifty-one billion, five hundred forty-one million, five hundred twelve thousand, five hundred fifty-one".