44542383781 has 8 divisors (see below), whose sum is σ = 50907137600. Its totient is φ = 38178019008.

The previous prime is 44542383773. The next prime is 44542383857. The reversal of 44542383781 is 18738324544.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 44542383781 - 2³ = 44542383773 is a prime.

It is a super-2 number, since 2×44542383781² (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 (44542384781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214870 + ... + 367768.

It is an arithmetic number, because the mean of its divisors is an integer number (6363392200).

Almost surely, 2^44542383781 is an apocalyptic number.

It is an amenable number.

44542383781 is a deficient number, since it is larger than the sum of its proper divisors (6364753819).

44542383781 is a wasteful number, since it uses less digits than its factorization.

44542383781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194523.

The product of its digits is 2580480, while the sum is 49.

The spelling of 44542383781 in words is "forty-four billion, five hundred forty-two million, three hundred eighty-three thousand, seven hundred eighty-one".