21832499913 has 16 divisors (see below), whose sum is σ = 33480478080. Its totient is φ = 12396249216.

The previous prime is 21832499903. The next prime is 21832499963. The reversal of 21832499913 is 31999423812.

It is not a de Polignac number, because 21832499913 - 2⁸ = 21832499657 is a prime.

It is a super-2 number, since 2×21832499913² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21832499903) 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, 3307668 + ... + 3314261.

It is an arithmetic number, because the mean of its divisors is an integer number (2092529880).

Almost surely, 2^21832499913 is an apocalyptic number.

It is an amenable number.

21832499913 is a deficient number, since it is larger than the sum of its proper divisors (11647978167).

21832499913 is a wasteful number, since it uses less digits than its factorization.

21832499913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6622096.

The product of its digits is 839808, while the sum is 51.

The spelling of 21832499913 in words is "twenty-one billion, eight hundred thirty-two million, four hundred ninety-nine thousand, nine hundred thirteen".