11213661523 has 8 divisors (see below), whose sum is σ = 11702424096. Its totient is φ = 10725000000.

The previous prime is 11213661497. The next prime is 11213661539. The reversal of 11213661523 is 32516631211.

11213661523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11213661523 - 2¹⁷ = 11213530451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11213661553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280273 + ... + 317773.

It is an arithmetic number, because the mean of its divisors is an integer number (1462803012).

Almost surely, 2^11213661523 is an apocalyptic number.

11213661523 is a deficient number, since it is larger than the sum of its proper divisors (488762573).

11213661523 is a wasteful number, since it uses less digits than its factorization.

11213661523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50525.

The product of its digits is 6480, while the sum is 31.

The spelling of 11213661523 in words is "eleven billion, two hundred thirteen million, six hundred sixty-one thousand, five hundred twenty-three".