21433525113 has 32 divisors (see below), whose sum is σ = 38370511872. Its totient is φ = 10277812800.

The previous prime is 21433525093. The next prime is 21433525123. The reversal of 21433525113 is 31152533412.

It is not a de Polignac number, because 21433525113 - 2¹⁰ = 21433524089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21433525123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3565683 + ... + 3571688.

It is an arithmetic number, because the mean of its divisors is an integer number (1199078496).

Almost surely, 2^21433525113 is an apocalyptic number.

It is an amenable number.

21433525113 is a deficient number, since it is larger than the sum of its proper divisors (16936986759).

21433525113 is a wasteful number, since it uses less digits than its factorization.

21433525113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7137405.

The product of its digits is 10800, while the sum is 30.

The spelling of 21433525113 in words is "twenty-one billion, four hundred thirty-three million, five hundred twenty-five thousand, one hundred thirteen".