47974792865 has 4 divisors (see below), whose sum is σ = 57569751444. Its totient is φ = 38379834288.

The previous prime is 47974792847. The next prime is 47974792867. The reversal of 47974792865 is 56829747974.

47974792865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 37101308689 + 10873484176 = 192617^2 + 104276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47974792865 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47974792795 and 47974792804.

It is not an unprimeable number, because it can be changed into a prime (47974792867) 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, 4797479282 + ... + 4797479291.

It is an arithmetic number, because the mean of its divisors is an integer number (14392437861).

Almost surely, 2^47974792865 is an apocalyptic number.

It is an amenable number.

47974792865 is a deficient number, since it is larger than the sum of its proper divisors (9594958579).

47974792865 is an equidigital number, since it uses as much as digits as its factorization.

47974792865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9594958578.

The product of its digits is 213373440, while the sum is 68.

The spelling of 47974792865 in words is "forty-seven billion, nine hundred seventy-four million, seven hundred ninety-two thousand, eight hundred sixty-five".