21444285950 has 12 divisors (see below), whose sum is σ = 39886371960. Its totient is φ = 8577714360.

The previous prime is 21444285943. The next prime is 21444285959. The reversal of 21444285950 is 5958244412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21444285959) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 214442810 + ... + 214442909.

It is an arithmetic number, because the mean of its divisors is an integer number (3323864330).

Almost surely, 2^21444285950 is an apocalyptic number.

21444285950 is a deficient number, since it is larger than the sum of its proper divisors (18442086010).

21444285950 is a wasteful number, since it uses less digits than its factorization.

21444285950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428885731 (or 428885726 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 44.

The spelling of 21444285950 in words is "twenty-one billion, four hundred forty-four million, two hundred eighty-five thousand, nine hundred fifty".