11455211511023 has 4 divisors (see below), whose sum is σ = 13091670298320. Its totient is φ = 9818752723728.

The previous prime is 11455211511013. The next prime is 11455211511043. The reversal of 11455211511023 is 32011511255411.

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 11455211511023 - 2¹⁰ = 11455211509999 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 (11455211511013) 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, 818229393638 + ... + 818229393651.

It is an arithmetic number, because the mean of its divisors is an integer number (3272917574580).

Almost surely, 2^{11455211511023} is an apocalyptic number.

11455211511023 is a deficient number, since it is larger than the sum of its proper divisors (1636458787297).

11455211511023 is an equidigital number, since it uses as much as digits as its factorization.

11455211511023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636458787296.

The product of its (nonzero) digits is 6000, while the sum is 32.

Adding to 11455211511023 its reverse (32011511255411), we get a palindrome (43466722766434).

The spelling of 11455211511023 in words is "eleven trillion, four hundred fifty-five billion, two hundred eleven million, five hundred eleven thousand, twenty-three".