21364240133532 has 96 divisors (see below), whose sum is σ = 51628534562304. Its totient is φ = 6871780281600.

The previous prime is 21364240133513. The next prime is 21364240133563. The reversal of 21364240133532 is 23533104246312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 462696807 + ... + 462742977.

It is an arithmetic number, because the mean of its divisors is an integer number (537797235024).

Almost surely, 2^{21364240133532} is an apocalyptic number.

It is an amenable number.

21364240133532 is an abundant number, since it is smaller than the sum of its proper divisors (30264294428772).

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

21364240133532 is a wasteful number, since it uses less digits than its factorization.

21364240133532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58219 (or 58217 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 39.

Adding to 21364240133532 its reverse (23533104246312), we get a palindrome (44897344379844).

The spelling of 21364240133532 in words is "twenty-one trillion, three hundred sixty-four billion, two hundred forty million, one hundred thirty-three thousand, five hundred thirty-two".