21675761288 has 16 divisors (see below), whose sum is σ = 40911207360. Its totient is φ = 10766106000.

The previous prime is 21675761287. The next prime is 21675761293. The reversal of 21675761288 is 88216757612.

It is not an unprimeable number, because it can be changed into a prime (21675761287) 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 3 ways as a sum of consecutive naturals, for example, 8970548 + ... + 8972963.

It is an arithmetic number, because the mean of its divisors is an integer number (2556950460).

Almost surely, 2^21675761288 is an apocalyptic number.

It is an amenable number.

21675761288 is a deficient number, since it is larger than the sum of its proper divisors (19235446072).

21675761288 is a wasteful number, since it uses less digits than its factorization.

21675761288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17943668 (or 17943664 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 53.

The spelling of 21675761288 in words is "twenty-one billion, six hundred seventy-five million, seven hundred sixty-one thousand, two hundred eighty-eight".