47817869863 has 4 divisors (see below), whose sum is σ = 47826841608. Its totient is φ = 47808898120.

The previous prime is 47817869851. The next prime is 47817869887. The reversal of 47817869863 is 36896871874.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36896871874 = 2 ⋅18448435937.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47817869863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47817869833) 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, 4477873 + ... + 4488538.

It is an arithmetic number, because the mean of its divisors is an integer number (11956710402).

Almost surely, 2^47817869863 is an apocalyptic number.

47817869863 is a deficient number, since it is larger than the sum of its proper divisors (8971745).

47817869863 is an equidigital number, since it uses as much as digits as its factorization.

47817869863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8971744.

The product of its digits is 97542144, while the sum is 67.

The spelling of 47817869863 in words is "forty-seven billion, eight hundred seventeen million, eight hundred sixty-nine thousand, eight hundred sixty-three".