47187782644 has 12 divisors (see below), whose sum is σ = 82591798464. Its totient is φ = 23590125944.

The previous prime is 47187782617. The next prime is 47187782659. The reversal of 47187782644 is 44628778174.

It is a congruent number.

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, 913054 + ... + 963349.

It is an arithmetic number, because the mean of its divisors is an integer number (6882649872).

Almost surely, 2^47187782644 is an apocalyptic number.

It is an amenable number.

47187782644 is a deficient number, since it is larger than the sum of its proper divisors (35404015820).

47187782644 is a wasteful number, since it uses less digits than its factorization.

47187782644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882694 (or 1882692 counting only the distinct ones).

The product of its digits is 16859136, while the sum is 58.

The spelling of 47187782644 in words is "forty-seven billion, one hundred eighty-seven million, seven hundred eighty-two thousand, six hundred forty-four".