21406041650 has 48 divisors (see below), whose sum is σ = 45616901760. Its totient is φ = 7320864000.

The previous prime is 21406041637. The next prime is 21406041697. The reversal of 21406041650 is 5614060412.

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 23 ways as a sum of consecutive naturals, for example, 64091 + ... + 216609.

It is an arithmetic number, because the mean of its divisors is an integer number (950352120).

Almost surely, 2^21406041650 is an apocalyptic number.

21406041650 is an abundant number, since it is smaller than the sum of its proper divisors (24210860110).

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

21406041650 is a wasteful number, since it uses less digits than its factorization.

21406041650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152939 (or 152934 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 21406041650 in words is "twenty-one billion, four hundred six million, forty-one thousand, six hundred fifty".