47267731813 has 4 divisors (see below), whose sum is σ = 47326159980. Its totient is φ = 47209303648.

The previous prime is 47267731807. The next prime is 47267731853. The reversal of 47267731813 is 31813776274.

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 34077898404 + 13189833409 = 184602^2 + 114847^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47267731813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47267731853) 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, 29212870 + ... + 29214487.

It is an arithmetic number, because the mean of its divisors is an integer number (11831539995).

Almost surely, 2^47267731813 is an apocalyptic number.

It is an amenable number.

47267731813 is a deficient number, since it is larger than the sum of its proper divisors (58428167).

47267731813 is an equidigital number, since it uses as much as digits as its factorization.

47267731813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58428166.

The product of its digits is 1185408, while the sum is 49.

The spelling of 47267731813 in words is "forty-seven billion, two hundred sixty-seven million, seven hundred thirty-one thousand, eight hundred thirteen".