44072536381 has 4 divisors (see below), whose sum is σ = 44089774972. Its totient is φ = 44055297792.

The previous prime is 44072536349. The next prime is 44072536393. The reversal of 44072536381 is 18363527044.

44072536381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20260960281 + 23811576100 = 142341^2 + 154310^2 .

It is a cyclic number.

It is not a de Polignac number, because 44072536381 - 2⁵ = 44072536349 is a prime.

It is a super-2 number, since 2×44072536381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44072536331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8615460 + ... + 8620573.

It is an arithmetic number, because the mean of its divisors is an integer number (11022443743).

Almost surely, 2^44072536381 is an apocalyptic number.

It is an amenable number.

44072536381 is a deficient number, since it is larger than the sum of its proper divisors (17238591).

44072536381 is a wasteful number, since it uses less digits than its factorization.

44072536381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17238590.

The product of its (nonzero) digits is 483840, while the sum is 43.

The spelling of 44072536381 in words is "forty-four billion, seventy-two million, five hundred thirty-six thousand, three hundred eighty-one".