20402044244 has 6 divisors (see below), whose sum is σ = 35703577434. Its totient is φ = 10201022120.

The previous prime is 20402044231. The next prime is 20402044259. The reversal of 20402044244 is 44244020402.

It can be written as a sum of positive squares in only one way, i.e., 17952784144 + 2449260100 = 133988^2 + 49490^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2550255527 + ... + 2550255534.

It is an arithmetic number, because the mean of its divisors is an integer number (5950596239).

Almost surely, 2^20402044244 is an apocalyptic number.

It is an amenable number.

20402044244 is a deficient number, since it is larger than the sum of its proper divisors (15301533190).

20402044244 is a wasteful number, since it uses less digits than its factorization.

20402044244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5100511065 (or 5100511063 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 20402044244 its reverse (44244020402), we get a palindrome (64646064646).

The spelling of 20402044244 in words is "twenty billion, four hundred two million, forty-four thousand, two hundred forty-four".