21552303398 has 32 divisors (see below), whose sum is σ = 33028853760. Its totient is φ = 10545665760.

The previous prime is 21552303397. The next prime is 21552303407. The reversal of 21552303398 is 89330325512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21552303397) 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, 8019611 + ... + 8022297.

It is an arithmetic number, because the mean of its divisors is an integer number (1032151680).

Almost surely, 2^21552303398 is an apocalyptic number.

21552303398 is a deficient number, since it is larger than the sum of its proper divisors (11476550362).

21552303398 is a wasteful number, since it uses less digits than its factorization.

21552303398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3212.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 21552303398 in words is "twenty-one billion, five hundred fifty-two million, three hundred three thousand, three hundred ninety-eight".