21441477362 has 18 divisors (see below), whose sum is σ = 32876001423. Its totient is φ = 10487874972.

The previous prime is 21441477359. The next prime is 21441477367. The reversal of 21441477362 is 26377414412.

It can be written as a sum of positive squares in only one way, i.e., 10720738681 + 10720738681 = 103541^2 + 103541^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=103541.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21441477367) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9731753 + ... + 9733955.

Almost surely, 2^21441477362 is an apocalyptic number.

21441477362 is a deficient number, since it is larger than the sum of its proper divisors (11434524061).

21441477362 is an frugal number, since it uses more digits than its factorization.

21441477362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4502 (or 2252 counting only the distinct ones).

The product of its digits is 225792, while the sum is 41.

The spelling of 21441477362 in words is "twenty-one billion, four hundred forty-one million, four hundred seventy-seven thousand, three hundred sixty-two".