44663161640 has 16 divisors (see below), whose sum is σ = 100492113780. Its totient is φ = 17865264640.

The previous prime is 44663161607. The next prime is 44663161657. The reversal of 44663161640 is 4616136644.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 40709518756 + 3953642884 = 201766^2 + 62878^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 558289481 + ... + 558289560.

Almost surely, 2^44663161640 is an apocalyptic number.

44663161640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44663161640 is an abundant number, since it is smaller than the sum of its proper divisors (55828952140).

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

44663161640 is a wasteful number, since it uses less digits than its factorization.

44663161640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116579052 (or 1116579048 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 44663161640 in words is "forty-four billion, six hundred sixty-three million, one hundred sixty-one thousand, six hundred forty".