21450044405010 has 64 divisors (see below), whose sum is σ = 55465867110528. Its totient is φ = 5277558326784.

The previous prime is 21450044404981. The next prime is 21450044405029. The reversal of 21450044405010 is 1050444005412.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11933232 + ... + 13612571.

It is an arithmetic number, because the mean of its divisors is an integer number (866654173602).

Almost surely, 2^{21450044405010} is an apocalyptic number.

21450044405010 is an abundant number, since it is smaller than the sum of its proper divisors (34015822705518).

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

21450044405010 is a wasteful number, since it uses less digits than its factorization.

21450044405010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25547979.

The product of its (nonzero) digits is 12800, while the sum is 30.

The spelling of 21450044405010 in words is "twenty-one trillion, four hundred fifty billion, forty-four million, four hundred five thousand, ten".