21733434339 has 32 divisors (see below), whose sum is σ = 30010834944. Its totient is φ = 13983852960.

The previous prime is 21733434319. The next prime is 21733434341. The reversal of 21733434339 is 93343433712.

It is not a de Polignac number, because 21733434339 - 2⁷ = 21733434211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21733434339.

It is not an unprimeable number, because it can be changed into a prime (21733434319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2321502 + ... + 2330844.

It is an arithmetic number, because the mean of its divisors is an integer number (937838592).

Almost surely, 2^21733434339 is an apocalyptic number.

21733434339 is a deficient number, since it is larger than the sum of its proper divisors (8277400605).

21733434339 is a wasteful number, since it uses less digits than its factorization.

21733434339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9647.

The product of its digits is 489888, while the sum is 42.

The spelling of 21733434339 in words is "twenty-one billion, seven hundred thirty-three million, four hundred thirty-four thousand, three hundred thirty-nine".