44355378013 has 4 divisors (see below), whose sum is σ = 44463826780. Its totient is φ = 44246929248.

The previous prime is 44355377993. The next prime is 44355378029. The reversal of 44355378013 is 31087355344.

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 37961456569 + 6393921444 = 194837^2 + 79962^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44355378013 is a prime.

It is a super-2 number, since 2×44355378013² (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 (44355378313) 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, 54223770 + ... + 54224587.

It is an arithmetic number, because the mean of its divisors is an integer number (11115956695).

Almost surely, 2^44355378013 is an apocalyptic number.

It is an amenable number.

44355378013 is a deficient number, since it is larger than the sum of its proper divisors (108448767).

44355378013 is a wasteful number, since it uses less digits than its factorization.

44355378013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108448766.

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 44355378013 in words is "forty-four billion, three hundred fifty-five million, three hundred seventy-eight thousand, thirteen".