47874551717 has 4 divisors (see below), whose sum is σ = 50690701836. Its totient is φ = 45058401600.

The previous prime is 47874551629. The next prime is 47874551723. The reversal of 47874551717 is 71715547874.

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 32676346756 + 15198204961 = 180766^2 + 123281^2 .

It is a cyclic number.

It is not a de Polignac number, because 47874551717 - 2¹² = 47874547621 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 (47874581717) 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, 1408075034 + ... + 1408075067.

It is an arithmetic number, because the mean of its divisors is an integer number (12672675459).

Almost surely, 2^47874551717 is an apocalyptic number.

It is an amenable number.

47874551717 is a deficient number, since it is larger than the sum of its proper divisors (2816150119).

47874551717 is a wasteful number, since it uses less digits than its factorization.

47874551717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2816150118.

The product of its digits is 7683200, while the sum is 56.

The spelling of 47874551717 in words is "forty-seven billion, eight hundred seventy-four million, five hundred fifty-one thousand, seven hundred seventeen".