21532540035124 has 48 divisors (see below), whose sum is σ = 39685376908800. Its totient is φ = 10194438837600.

The previous prime is 21532540035079. The next prime is 21532540035131. The reversal of 21532540035124 is 42153004523512.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1783818009 + ... + 1783830079.

It is an arithmetic number, because the mean of its divisors is an integer number (826778685600).

Almost surely, 2^{21532540035124} is an apocalyptic number.

It is an amenable number.

21532540035124 is a deficient number, since it is larger than the sum of its proper divisors (18152836873676).

21532540035124 is a wasteful number, since it uses less digits than its factorization.

21532540035124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22084 (or 22082 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 21532540035124 its reverse (42153004523512), we get a palindrome (63685544558636).

The spelling of 21532540035124 in words is "twenty-one trillion, five hundred thirty-two billion, five hundred forty million, thirty-five thousand, one hundred twenty-four".