47485814891 has 8 divisors (see below), whose sum is σ = 47614790304. Its totient is φ = 47356892800.

The previous prime is 47485814879. The next prime is 47485814921. The reversal of 47485814891 is 19841858474.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47485814891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47485814891.

It is not an unprimeable number, because it can be changed into a prime (47485864891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2308745 + ... + 2329221.

It is an arithmetic number, because the mean of its divisors is an integer number (5951848788).

Almost surely, 2^47485814891 is an apocalyptic number.

47485814891 is a deficient number, since it is larger than the sum of its proper divisors (128975413).

47485814891 is a wasteful number, since it uses less digits than its factorization.

47485814891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26661.

The product of its digits is 10321920, while the sum is 59.

The spelling of 47485814891 in words is "forty-seven billion, four hundred eighty-five million, eight hundred fourteen thousand, eight hundred ninety-one".