47827329281 has 4 divisors (see below), whose sum is σ = 47830288212. Its totient is φ = 47824370352.

The previous prime is 47827329239. The next prime is 47827329293. The reversal of 47827329281 is 18292372874.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19482576400 + 28344752881 = 139580^2 + 168359^2 .

It is a cyclic number.

It is not a de Polignac number, because 47827329281 - 2¹⁸ = 47827067137 is a prime.

It is a super-2 number, since 2×47827329281² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47827322281) 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, 1455086 + ... + 1487591.

It is an arithmetic number, because the mean of its divisors is an integer number (11957572053).

Almost surely, 2^47827329281 is an apocalyptic number.

It is an amenable number.

47827329281 is a deficient number, since it is larger than the sum of its proper divisors (2958931).

47827329281 is a wasteful number, since it uses less digits than its factorization.

47827329281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2958930.

The product of its digits is 2709504, while the sum is 53.

The spelling of 47827329281 in words is "forty-seven billion, eight hundred twenty-seven million, three hundred twenty-nine thousand, two hundred eighty-one".