11451636163231 has 4 divisors (see below), whose sum is σ = 12492693996264. Its totient is φ = 10410578330200.

The previous prime is 11451636163193. The next prime is 11451636163249. The reversal of 11451636163231 is 13236163615411.

11451636163231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11451636163231 - 2¹³ = 11451636155039 is a prime.

It is a super-2 number, since 2×11451636163231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11451636163291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520528916500 + ... + 520528916521.

It is an arithmetic number, because the mean of its divisors is an integer number (3123173499066).

Almost surely, 2^{11451636163231} is an apocalyptic number.

11451636163231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11451636163231 is a deficient number, since it is larger than the sum of its proper divisors (1041057833033).

11451636163231 is a wasteful number, since it uses less digits than its factorization.

11451636163231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041057833032.

The product of its digits is 233280, while the sum is 43.

Adding to 11451636163231 its reverse (13236163615411), we get a palindrome (24687799778642).

The spelling of 11451636163231 in words is "eleven trillion, four hundred fifty-one billion, six hundred thirty-six million, one hundred sixty-three thousand, two hundred thirty-one".