47904798509 has 4 divisors (see below), whose sum is σ = 47952277020. Its totient is φ = 47857320000.

The previous prime is 47904798499. The next prime is 47904798533. The reversal of 47904798509 is 90589740974.

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 34353510409 + 13551288100 = 185347^2 + 116410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47904798509 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 (47904788509) 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, 23737742 + ... + 23739759.

It is an arithmetic number, because the mean of its divisors is an integer number (11988069255).

Almost surely, 2^47904798509 is an apocalyptic number.

It is an amenable number.

47904798509 is a deficient number, since it is larger than the sum of its proper divisors (47478511).

47904798509 is a wasteful number, since it uses less digits than its factorization.

47904798509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47478510.

The product of its (nonzero) digits is 22861440, while the sum is 62.

The spelling of 47904798509 in words is "forty-seven billion, nine hundred four million, seven hundred ninety-eight thousand, five hundred nine".