44121336666 has 96 divisors (see below), whose sum is σ = 102634163520. Its totient is φ = 12600023040.

The previous prime is 44121336659. The next prime is 44121336689. The reversal of 44121336666 is 66663312144.

44121336666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×44121336666⁴ (a number of 44 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2653956 + ... + 2670528.

It is an arithmetic number, because the mean of its divisors is an integer number (1069105870).

Almost surely, 2^44121336666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44121336666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51317081760).

44121336666 is an abundant number, since it is smaller than the sum of its proper divisors (58512826854).

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

44121336666 is a wasteful number, since it uses less digits than its factorization.

44121336666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16812 (or 16801 counting only the distinct ones).

The product of its digits is 373248, while the sum is 42.

The spelling of 44121336666 in words is "forty-four billion, one hundred twenty-one million, three hundred thirty-six thousand, six hundred sixty-six".