21552303414 has 32 divisors (see below), whose sum is σ = 44506036224. Its totient is φ = 6950643840.

The previous prime is 21552303413. The next prime is 21552303449. The reversal of 21552303414 is 41430325512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21552303413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 900142 + ... + 923774.

It is an arithmetic number, because the mean of its divisors is an integer number (1390813632).

Almost surely, 2^21552303414 is an apocalyptic number.

21552303414 is an abundant number, since it is smaller than the sum of its proper divisors (22953732810).

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

21552303414 is a wasteful number, since it uses less digits than its factorization.

21552303414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28572.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 21552303414 its reverse (41430325512), we get a palindrome (62982628926).

The spelling of 21552303414 in words is "twenty-one billion, five hundred fifty-two million, three hundred three thousand, four hundred fourteen".