21333740982 has 16 divisors (see below), whose sum is σ = 42746356272. Its totient is φ = 7098101280.

The previous prime is 21333740959. The next prime is 21333740993. The reversal of 21333740982 is 28904733312.

It is a congruent number.

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, 3282913 + ... + 3289404.

It is an arithmetic number, because the mean of its divisors is an integer number (2671647267).

Almost surely, 2^21333740982 is an apocalyptic number.

21333740982 is an abundant number, since it is smaller than the sum of its proper divisors (21412615290).

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

21333740982 is a wasteful number, since it uses less digits than its factorization.

21333740982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6572863.

The product of its (nonzero) digits is 217728, while the sum is 42.

The spelling of 21333740982 in words is "twenty-one billion, three hundred thirty-three million, seven hundred forty thousand, nine hundred eighty-two".