44661221612 has 48 divisors (see below), whose sum is σ = 93389829120. Its totient is φ = 18272223552.

The previous prime is 44661221587. The next prime is 44661221621. The reversal of 44661221612 is 21612216644.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259673 + ... + 395919.

It is an arithmetic number, because the mean of its divisors is an integer number (1945621440).

Almost surely, 2^44661221612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44661221612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46694914560).

44661221612 is an abundant number, since it is smaller than the sum of its proper divisors (48728607508).

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

44661221612 is a wasteful number, since it uses less digits than its factorization.

44661221612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136790 (or 136788 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The spelling of 44661221612 in words is "forty-four billion, six hundred sixty-one million, two hundred twenty-one thousand, six hundred twelve".