21798576898 has 16 divisors (see below), whose sum is σ = 37926736704. Its totient is φ = 9202810320.

The previous prime is 21798576889. The next prime is 21798576929. The reversal of 21798576898 is 89867589712.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11618773 + ... + 11620648.

It is an arithmetic number, because the mean of its divisors is an integer number (2370421044).

Almost surely, 2^21798576898 is an apocalyptic number.

21798576898 is a deficient number, since it is larger than the sum of its proper divisors (16128159806).

21798576898 is a wasteful number, since it uses less digits than its factorization.

21798576898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23239497.

The product of its digits is 121927680, while the sum is 70.

The spelling of 21798576898 in words is "twenty-one billion, seven hundred ninety-eight million, five hundred seventy-six thousand, eight hundred ninety-eight".