21950401344 has 28 divisors (see below), whose sum is σ = 58077104064. Its totient is φ = 7316800384.

The previous prime is 21950401331. The next prime is 21950401351. The reversal of 21950401344 is 44310405912.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57162312 + ... + 57162695.

It is an arithmetic number, because the mean of its divisors is an integer number (2074182288).

Almost surely, 2^21950401344 is an apocalyptic number.

21950401344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21950401344 is an abundant number, since it is smaller than the sum of its proper divisors (36126702720).

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

21950401344 is a wasteful number, since it uses less digits than its factorization.

21950401344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114325022 (or 114325012 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 21950401344 in words is "twenty-one billion, nine hundred fifty million, four hundred one thousand, three hundred forty-four".