21889112952 has 32 divisors (see below), whose sum is σ = 62540323200. Its totient is φ = 6254032224.

The previous prime is 21889112951. The next prime is 21889112957. The reversal of 21889112952 is 25921198812.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21889112951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65146002 + ... + 65146337.

It is an arithmetic number, because the mean of its divisors is an integer number (1954385100).

Almost surely, 2^21889112952 is an apocalyptic number.

It is an amenable number.

21889112952 is an abundant number, since it is smaller than the sum of its proper divisors (40651210248).

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

21889112952 is a wasteful number, since it uses less digits than its factorization.

21889112952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130292355 (or 130292351 counting only the distinct ones).

The product of its digits is 207360, while the sum is 48.

The spelling of 21889112952 in words is "twenty-one billion, eight hundred eighty-nine million, one hundred twelve thousand, nine hundred fifty-two".