47228460581 has 4 divisors (see below), whose sum is σ = 47230108992. Its totient is φ = 47226812172.

The previous prime is 47228460577. The next prime is 47228460583. The reversal of 47228460581 is 18506482274.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47228460581 - 2² = 47228460577 is a prime.

It is a super-2 number, since 2×47228460581² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47228460583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 780455 + ... + 838788.

It is an arithmetic number, because the mean of its divisors is an integer number (11807527248).

Almost surely, 2^47228460581 is an apocalyptic number.

It is an amenable number.

47228460581 is a deficient number, since it is larger than the sum of its proper divisors (1648411).

47228460581 is a wasteful number, since it uses less digits than its factorization.

47228460581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648410.

The product of its (nonzero) digits is 860160, while the sum is 47.

The spelling of 47228460581 in words is "forty-seven billion, two hundred twenty-eight million, four hundred sixty thousand, five hundred eighty-one".