44778393221 has 8 divisors (see below), whose sum is σ = 45094077600. Its totient is φ = 44462911248.

The previous prime is 44778393211. The next prime is 44778393229. The reversal of 44778393221 is 12239387744.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44778393221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44778393221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44778393229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407990 + ... + 505976.

It is an arithmetic number, because the mean of its divisors is an integer number (5636759700).

Almost surely, 2^44778393221 is an apocalyptic number.

It is an amenable number.

44778393221 is a deficient number, since it is larger than the sum of its proper divisors (315684379).

44778393221 is a wasteful number, since it uses less digits than its factorization.

44778393221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101203.

The product of its digits is 2032128, while the sum is 50.

The spelling of 44778393221 in words is "forty-four billion, seven hundred seventy-eight million, three hundred ninety-three thousand, two hundred twenty-one".