44778287745 has 48 divisors (see below), whose sum is σ = 80696179200. Its totient is φ = 22945006080.

The previous prime is 44778287737. The next prime is 44778287767. The reversal of 44778287745 is 54778287744.

44778287745 is a `hidden beast` number, since 4 + 477 + 82 + 87 + 7 + 4 + 5 = 666.

It is not a de Polignac number, because 44778287745 - 2³ = 44778287737 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78441 + ... + 309369.

It is an arithmetic number, because the mean of its divisors is an integer number (1681170400).

Almost surely, 2^44778287745 is an apocalyptic number.

44778287745 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

44778287745 is a deficient number, since it is larger than the sum of its proper divisors (35917891455).

44778287745 is a wasteful number, since it uses less digits than its factorization.

44778287745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231110 (or 231107 counting only the distinct ones).

The product of its digits is 98344960, while the sum is 63.

Subtracting 44778287745 from its reverse (54778287744), we obtain a palindrome (9999999999).

The spelling of 44778287745 in words is "forty-four billion, seven hundred seventy-eight million, two hundred eighty-seven thousand, seven hundred forty-five".