11453533531 has 4 divisors (see below), whose sum is σ = 12494763864. Its totient is φ = 10412303200.

The previous prime is 11453533529. The next prime is 11453533543. The reversal of 11453533531 is 13533535411.

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 11453533531 - 2¹ = 11453533529 is a prime.

It is a super-2 number, since 2×11453533531² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11453533561) 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, 520615150 + ... + 520615171.

It is an arithmetic number, because the mean of its divisors is an integer number (3123690966).

Almost surely, 2^11453533531 is an apocalyptic number.

11453533531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11453533531 is a deficient number, since it is larger than the sum of its proper divisors (1041230333).

11453533531 is a wasteful number, since it uses less digits than its factorization.

11453533531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041230332.

The product of its digits is 40500, while the sum is 34.

The spelling of 11453533531 in words is "eleven billion, four hundred fifty-three million, five hundred thirty-three thousand, five hundred thirty-one".