21724336310733 has 24 divisors (see below), whose sum is σ = 35872019159808. Its totient is φ = 12410575525152.

The previous prime is 21724336310627. The next prime is 21724336310749. The reversal of 21724336310733 is 33701363342712.

21724336310733 is a `hidden beast` number, since 2 + 1 + 7 + 2 + 4 + 3 + 3 + 631 + 0 + 7 + 3 + 3 = 666.

It is not a de Polignac number, because 21724336310733 - 2⁸ = 21724336310477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21724336310233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46026366 + ... + 46495967.

It is an arithmetic number, because the mean of its divisors is an integer number (1494667464992).

Almost surely, 2^{21724336310733} is an apocalyptic number.

It is an amenable number.

21724336310733 is a deficient number, since it is larger than the sum of its proper divisors (14147682849075).

21724336310733 is a wasteful number, since it uses less digits than its factorization.

21724336310733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92526073 (or 92526070 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 45.

The spelling of 21724336310733 in words is "twenty-one trillion, seven hundred twenty-four billion, three hundred thirty-six million, three hundred ten thousand, seven hundred thirty-three".