11012512466551 has 4 divisors (see below), whose sum is σ = 11014428025000. Its totient is φ = 11010596908104.

The previous prime is 11012512466533. The next prime is 11012512466563. The reversal of 11012512466551 is 15566421521011.

It is a happy number.

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 11012512466551 - 2⁵ = 11012512466519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012512463551) 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, 957770601 + ... + 957782098.

It is an arithmetic number, because the mean of its divisors is an integer number (2753607006250).

Almost surely, 2^{11012512466551} is an apocalyptic number.

11012512466551 is a deficient number, since it is larger than the sum of its proper divisors (1915558449).

11012512466551 is an equidigital number, since it uses as much as digits as its factorization.

11012512466551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915558448.

The product of its (nonzero) digits is 72000, while the sum is 40.

Adding to 11012512466551 its reverse (15566421521011), we get a palindrome (26578933987562).

The spelling of 11012512466551 in words is "eleven trillion, twelve billion, five hundred twelve million, four hundred sixty-six thousand, five hundred fifty-one".