47991025664 has 104 divisors (see below), whose sum is σ = 102019232640. Its totient is φ = 22508126208.

The previous prime is 47991025657. The next prime is 47991025679. The reversal of 47991025664 is 46652019974.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8012879 + ... + 8018865.

It is an arithmetic number, because the mean of its divisors is an integer number (980954160).

Almost surely, 2^47991025664 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 47991025664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51009616320).

47991025664 is an abundant number, since it is smaller than the sum of its proper divisors (54028206976).

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

47991025664 is a wasteful number, since it uses less digits than its factorization.

47991025664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6133 (or 6111 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 47991025664 in words is "forty-seven billion, nine hundred ninety-one million, twenty-five thousand, six hundred sixty-four".