47517518879 has 12 divisors (see below), whose sum is σ = 49019675784. Its totient is φ = 46027743984.

The previous prime is 47517518869. The next prime is 47517518887. The reversal of 47517518879 is 97881571574.

It is not a de Polignac number, because 47517518879 - 2²⁰ = 47516470303 is a prime.

It is a super-2 number, since 2×47517518879² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47517518809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1894112 + ... + 1919034.

It is an arithmetic number, because the mean of its divisors is an integer number (4084972982).

Almost surely, 2^47517518879 is an apocalyptic number.

47517518879 is a deficient number, since it is larger than the sum of its proper divisors (1502156905).

47517518879 is an equidigital number, since it uses as much as digits as its factorization.

47517518879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25414 (or 25187 counting only the distinct ones).

The product of its digits is 19756800, while the sum is 62.

The spelling of 47517518879 in words is "forty-seven billion, five hundred seventeen million, five hundred eighteen thousand, eight hundred seventy-nine".