47997879973 has 4 divisors (see below), whose sum is σ = 48015772288. Its totient is φ = 47979987660.

The previous prime is 47997879967. The next prime is 47997879977. The reversal of 47997879973 is 37997879974.

47997879973 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47997879973 - 2¹³ = 47997871781 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47997879893 and 47997879902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47997879977) 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, 8942133 + ... + 8947498.

It is an arithmetic number, because the mean of its divisors is an integer number (12003943072).

Almost surely, 2^47997879973 is an apocalyptic number.

It is an amenable number.

47997879973 is a deficient number, since it is larger than the sum of its proper divisors (17892315).

47997879973 is a wasteful number, since it uses less digits than its factorization.

47997879973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17892314.

The product of its digits is 1512284256, while the sum is 79.

Subtracting from 47997879973 its reverse (37997879974), we obtain a palindrome (9999999999).

The spelling of 47997879973 in words is "forty-seven billion, nine hundred ninety-seven million, eight hundred seventy-nine thousand, nine hundred seventy-three".