21896751904 has 48 divisors (see below), whose sum is σ = 43785372960. Its totient is φ = 10777607680.

The previous prime is 21896751883. The next prime is 21896751907. The reversal of 21896751904 is 40915769812.

It is not an unprimeable number, because it can be changed into a prime (21896751907) 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, 731667 + ... + 761005.

It is an arithmetic number, because the mean of its divisors is an integer number (912195270).

Almost surely, 2^21896751904 is an apocalyptic number.

It is an amenable number.

21896751904 is a deficient number, since it is larger than the sum of its proper divisors (21888621056).

21896751904 is a wasteful number, since it uses less digits than its factorization.

21896751904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29713 (or 29705 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 21896751904 in words is "twenty-one billion, eight hundred ninety-six million, seven hundred fifty-one thousand, nine hundred four".