21514003502432 has 72 divisors (see below), whose sum is σ = 49272056646624. Its totient is φ = 9220072603392.

The previous prime is 21514003502401. The next prime is 21514003502441. The reversal of 21514003502432 is 23420530041512.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 80080073 + ... + 80348279.

It is an arithmetic number, because the mean of its divisors is an integer number (684334120092).

Almost surely, 2^{21514003502432} is an apocalyptic number.

It is an amenable number.

21514003502432 is an abundant number, since it is smaller than the sum of its proper divisors (27758053144192).

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

21514003502432 is a wasteful number, since it uses less digits than its factorization.

21514003502432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319388 (or 319373 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 21514003502432 its reverse (23420530041512), we get a palindrome (44934533543944).

The spelling of 21514003502432 in words is "twenty-one trillion, five hundred fourteen billion, three million, five hundred two thousand, four hundred thirty-two".