21300795944 has 8 divisors (see below), whose sum is σ = 39938992410. Its totient is φ = 10650397968.

The previous prime is 21300795941. The next prime is 21300795953. The reversal of 21300795944 is 44959700312.

It can be written as a sum of positive squares in only one way, i.e., 21010502500 + 290293444 = 144950^2 + 17038^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×21300795944² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21300795895 and 21300795904.

It is not an unprimeable number, because it can be changed into a prime (21300795941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1331299739 + ... + 1331299754.

Almost surely, 2^21300795944 is an apocalyptic number.

It is an amenable number.

21300795944 is a deficient number, since it is larger than the sum of its proper divisors (18638196466).

21300795944 is a wasteful number, since it uses less digits than its factorization.

21300795944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2662599499 (or 2662599495 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 21300795944 in words is "twenty-one billion, three hundred million, seven hundred ninety-five thousand, nine hundred forty-four".