44636308843681 has 3 divisors (see below), whose sum is σ = 44636315524723. Its totient is φ = 44636302162640.

The previous prime is 44636308843667. The next prime is 44636308843783. The reversal of 44636308843681 is 18634880363644.

It is a happy number.

The square root of 44636308843681 is 6681041.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 38715262621281 + 5921046222400 = 6222159^2 + 2433320^2 .

It is not a de Polignac number, because 44636308843681 - 2⁹ = 44636308843169 is a prime.

It is a super-2 number, since 2×44636308843681² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44636308843661) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3340521 + ... + 10021561.

Almost surely, 2^{44636308843681} is an apocalyptic number.

44636308843681 is the 6681041-st square number.

44636308843681 is the 3340521-st centered octagonal number.

It is an amenable number.

44636308843681 is a deficient number, since it is larger than the sum of its proper divisors (6681042).

44636308843681 is an frugal number, since it uses more digits than its factorization.

44636308843681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13362082 (or 6681041 counting only the distinct ones).

The product of its (nonzero) digits is 191102976, while the sum is 64.

The spelling of 44636308843681 in words is "forty-four trillion, six hundred thirty-six billion, three hundred eight million, eight hundred forty-three thousand, six hundred eighty-one".