47681716728 has 16 divisors (see below), whose sum is σ = 119204291880. Its totient is φ = 15893905568.

The previous prime is 47681716723. The next prime is 47681716729. The reversal of 47681716728 is 82761718674.

It is a super-2 number, since 2×47681716728² (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 (47681716723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 993369075 + ... + 993369122.

Almost surely, 2^47681716728 is an apocalyptic number.

It is an amenable number.

47681716728 is an abundant number, since it is smaller than the sum of its proper divisors (71522575152).

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

47681716728 is a wasteful number, since it uses less digits than its factorization.

47681716728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986738206 (or 1986738202 counting only the distinct ones).

The product of its digits is 6322176, while the sum is 57.

The spelling of 47681716728 in words is "forty-seven billion, six hundred eighty-one million, seven hundred sixteen thousand, seven hundred twenty-eight".