21732610969 has 8 divisors (see below), whose sum is σ = 22034684672. Its totient is φ = 21432288960.

The previous prime is 21732610957. The next prime is 21732610973. The reversal of 21732610969 is 96901623712.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21732610969 is a prime.

It is a super-2 number, since 2×21732610969² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21732610979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412929 + ... + 462574.

It is an arithmetic number, because the mean of its divisors is an integer number (2754335584).

Almost surely, 2^21732610969 is an apocalyptic number.

It is an amenable number.

21732610969 is a deficient number, since it is larger than the sum of its proper divisors (302073703).

21732610969 is a wasteful number, since it uses less digits than its factorization.

21732610969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875847.

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 21732610969 in words is "twenty-one billion, seven hundred thirty-two million, six hundred ten thousand, nine hundred sixty-nine".