21692345534 has 16 divisors (see below), whose sum is σ = 33966587520. Its totient is φ = 10370520600.

The previous prime is 21692345527. The next prime is 21692345539. The reversal of 21692345534 is 43554329612.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21692345539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27209 + ... + 210059.

It is an arithmetic number, because the mean of its divisors is an integer number (2122911720).

Almost surely, 2^21692345534 is an apocalyptic number.

21692345534 is a deficient number, since it is larger than the sum of its proper divisors (12274241986).

21692345534 is a wasteful number, since it uses less digits than its factorization.

21692345534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185455.

The product of its digits is 777600, while the sum is 44.

The spelling of 21692345534 in words is "twenty-one billion, six hundred ninety-two million, three hundred forty-five thousand, five hundred thirty-four".