21140525140332 has 24 divisors (see below), whose sum is σ = 53122345224816. Its totient is φ = 6504776966208.

The previous prime is 21140525140313. The next prime is 21140525140439. The reversal of 21140525140332 is 23304152504112.

It is a junction number, because it is equal to n+sod(n) for n = 21140525140293 and 21140525140302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67758093243 + ... + 67758093554.

It is an arithmetic number, because the mean of its divisors is an integer number (2213431051034).

Almost surely, 2^{21140525140332} is an apocalyptic number.

It is an amenable number.

21140525140332 is an abundant number, since it is smaller than the sum of its proper divisors (31981820084484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21140525140332 is a wasteful number, since it uses less digits than its factorization.

21140525140332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135516186817 (or 135516186815 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 21140525140332 its reverse (23304152504112), we get a palindrome (44444677644444).

The spelling of 21140525140332 in words is "twenty-one trillion, one hundred forty billion, five hundred twenty-five million, one hundred forty thousand, three hundred thirty-two".