8101447644 has 48 divisors (see below), whose sum is σ = 19503912960. Its totient is φ = 2615640960.

The previous prime is 8101447609. The next prime is 8101447691. The reversal of 8101447644 is 4467441018.

It is a congruent number.

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, 9157 + ... + 127619.

It is an arithmetic number, because the mean of its divisors is an integer number (406331520).

Almost surely, 2^8101447644 is an apocalyptic number.

It is an amenable number.

8101447644 is an abundant number, since it is smaller than the sum of its proper divisors (11402465316).

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

8101447644 is a wasteful number, since it uses less digits than its factorization.

8101447644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118650 (or 118648 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 8101447644 is about 90008.0421073584. The cubic root of 8101447644 is about 2008.4184851683.

The spelling of 8101447644 in words is "eight billion, one hundred one million, four hundred forty-seven thousand, six hundred forty-four".