47873121971 has 4 divisors (see below), whose sum is σ = 48087799872. Its totient is φ = 47658444072.

The previous prime is 47873121917. The next prime is 47873121979. The reversal of 47873121971 is 17912137874.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47873121971 - 2¹⁰ = 47873120947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47873121979) 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, 107338616 + ... + 107339061.

It is an arithmetic number, because the mean of its divisors is an integer number (12021949968).

Almost surely, 2^47873121971 is an apocalyptic number.

47873121971 is a deficient number, since it is larger than the sum of its proper divisors (214677901).

47873121971 is a wasteful number, since it uses less digits than its factorization.

47873121971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214677900.

The product of its digits is 592704, while the sum is 50.

The spelling of 47873121971 in words is "forty-seven billion, eight hundred seventy-three million, one hundred twenty-one thousand, nine hundred seventy-one".