21887827610 has 32 divisors (see below), whose sum is σ = 42985899072. Its totient is φ = 7958068480.

The previous prime is 21887827603. The next prime is 21887827627. The reversal of 21887827610 is 1672878812.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1324217 + ... + 1340643.

It is an arithmetic number, because the mean of its divisors is an integer number (1343309346).

Almost surely, 2^21887827610 is an apocalyptic number.

21887827610 is a deficient number, since it is larger than the sum of its proper divisors (21098071462).

21887827610 is a wasteful number, since it uses less digits than its factorization.

21887827610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28558.

The product of its (nonzero) digits is 602112, while the sum is 50.

The spelling of 21887827610 in words is "twenty-one billion, eight hundred eighty-seven million, eight hundred twenty-seven thousand, six hundred ten".