21889135296 has 84 divisors (see below), whose sum is σ = 71704303632. Its totient is φ = 6254037504.

The previous prime is 21889135277. The next prime is 21889135319. The reversal of 21889135296 is 69253198812.

21889135296 is a `hidden beast` number, since 21 + 8 + 8 + 91 + 3 + 529 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (84).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2710395 + ... + 2718458.

Almost surely, 2^21889135296 is an apocalyptic number.

It is an amenable number.

21889135296 is an abundant number, since it is smaller than the sum of its proper divisors (49815168336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21889135296 is a wasteful number, since it uses less digits than its factorization.

21889135296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5428878 (or 5428865 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The spelling of 21889135296 in words is "twenty-one billion, eight hundred eighty-nine million, one hundred thirty-five thousand, two hundred ninety-six".