44666665880 has 32 divisors (see below), whose sum is σ = 101223032400. Its totient is φ = 17738126976.

The previous prime is 44666665867. The next prime is 44666665889. The reversal of 44666665880 is 8856666644.

It is a happy number.

It is a super-2 number, since 2×44666665880² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44666665889) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4011227 + ... + 4022346.

Almost surely, 2^44666665880 is an apocalyptic number.

44666665880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44666665880 is an abundant number, since it is smaller than the sum of its proper divisors (56556366520).

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

44666665880 is a wasteful number, since it uses less digits than its factorization.

44666665880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8033723 (or 8033719 counting only the distinct ones).

The product of its (nonzero) digits is 39813120, while the sum is 59.

The spelling of 44666665880 in words is "forty-four billion, six hundred sixty-six million, six hundred sixty-five thousand, eight hundred eighty".