47545987873 has 4 divisors (see below), whose sum is σ = 47548719360. Its totient is φ = 47543256388.

The previous prime is 47545987837. The next prime is 47545987877. The reversal of 47545987873 is 37878954574.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47545987873 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47545987799 and 47545987808.

It is not an unprimeable number, because it can be changed into a prime (47545987877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1339465 + ... + 1374502.

It is an arithmetic number, because the mean of its divisors is an integer number (11887179840).

Almost surely, 2^47545987873 is an apocalyptic number.

It is an amenable number.

47545987873 is a deficient number, since it is larger than the sum of its proper divisors (2731487).

47545987873 is a wasteful number, since it uses less digits than its factorization.

47545987873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2731486.

The product of its digits is 237081600, while the sum is 67.

The spelling of 47545987873 in words is "forty-seven billion, five hundred forty-five million, nine hundred eighty-seven thousand, eight hundred seventy-three".