21622001744 has 20 divisors (see below), whose sum is σ = 47877289824. Its totient is φ = 9266572128.

The previous prime is 21622001699. The next prime is 21622001749. The reversal of 21622001744 is 44710022612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21622001749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96526682 + ... + 96526905.

Almost surely, 2^21622001744 is an apocalyptic number.

It is an amenable number.

21622001744 is an abundant number, since it is smaller than the sum of its proper divisors (26255288080).

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

21622001744 is a wasteful number, since it uses less digits than its factorization.

21622001744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193053602 (or 193053596 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The spelling of 21622001744 in words is "twenty-one billion, six hundred twenty-two million, one thousand, seven hundred forty-four".