21363105952 has 24 divisors (see below), whose sum is σ = 42071733396. Its totient is φ = 10678221312.

The previous prime is 21363105941. The next prime is 21363105961. The reversal of 21363105952 is 25950136312.

It can be written as a sum of positive squares in 2 ways, for example, as 21349885456 + 13220496 = 146116^2 + 3636^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1738 + ... + 206710.

Almost surely, 2^21363105952 is an apocalyptic number.

It is an amenable number.

21363105952 is a deficient number, since it is larger than the sum of its proper divisors (20708627444).

21363105952 is a wasteful number, since it uses less digits than its factorization.

21363105952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208240 (or 208232 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 37.

The spelling of 21363105952 in words is "twenty-one billion, three hundred sixty-three million, one hundred five thousand, nine hundred fifty-two".