44545771644 has 48 divisors (see below), whose sum is σ = 114511936896. Its totient is φ = 13365064000.

The previous prime is 44545771637. The next prime is 44545771649. The reversal of 44545771644 is 44617754544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44545771649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1657302 + ... + 1683965.

It is an arithmetic number, because the mean of its divisors is an integer number (2385665352).

Almost surely, 2^44545771644 is an apocalyptic number.

44545771644 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

44545771644 is an abundant number, since it is smaller than the sum of its proper divisors (69966165252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

44545771644 is a wasteful number, since it uses less digits than its factorization.

44545771644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3341386 (or 3341384 counting only the distinct ones).

The product of its digits is 7526400, while the sum is 51.

The spelling of 44545771644 in words is "forty-four billion, five hundred forty-five million, seven hundred seventy-one thousand, six hundred forty-four".