11311875623551 has 4 divisors (see below), whose sum is σ = 11471197815504. Its totient is φ = 11152553431600.

The previous prime is 11311875623519. The next prime is 11311875623563. The reversal of 11311875623551 is 15532657811311.

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 11311875623551 - 2⁵ = 11311875623519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11311875623495 and 11311875623504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311875621551) 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, 79661095870 + ... + 79661096011.

It is an arithmetic number, because the mean of its divisors is an integer number (2867799453876).

Almost surely, 2^{11311875623551} is an apocalyptic number.

11311875623551 is a deficient number, since it is larger than the sum of its proper divisors (159322191953).

11311875623551 is an equidigital number, since it uses as much as digits as its factorization.

11311875623551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159322191952.

The product of its digits is 756000, while the sum is 49.

The spelling of 11311875623551 in words is "eleven trillion, three hundred eleven billion, eight hundred seventy-five million, six hundred twenty-three thousand, five hundred fifty-one".