47479792861 has 4 divisors (see below), whose sum is σ = 47484356832. Its totient is φ = 47475228892.

The previous prime is 47479792853. The next prime is 47479792909. The reversal of 47479792861 is 16829797474.

It is a happy number.

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 47479792861 - 2³ = 47479792853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47479792793 and 47479792802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47479792961) 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, 2266345 + ... + 2287198.

It is an arithmetic number, because the mean of its divisors is an integer number (11871089208).

Almost surely, 2^47479792861 is an apocalyptic number.

It is an amenable number.

47479792861 is a deficient number, since it is larger than the sum of its proper divisors (4563971).

47479792861 is a wasteful number, since it uses less digits than its factorization.

47479792861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4563970.

The product of its digits is 42674688, while the sum is 64.

The spelling of 47479792861 in words is "forty-seven billion, four hundred seventy-nine million, seven hundred ninety-two thousand, eight hundred sixty-one".