47868512531 has 6 divisors (see below), whose sum is σ = 55683779940. Its totient is φ = 41030153556.

The previous prime is 47868512521. The next prime is 47868512597. The reversal of 47868512531 is 13521586874.

It is not a de Polignac number, because 47868512531 - 2¹⁰ = 47868511507 is a prime.

It is a super-2 number, since 2×47868512531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47868512531.

It is not an unprimeable number, because it can be changed into a prime (47868512521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 488454161 + ... + 488454258.

It is an arithmetic number, because the mean of its divisors is an integer number (9280629990).

Almost surely, 2^47868512531 is an apocalyptic number.

47868512531 is a deficient number, since it is larger than the sum of its proper divisors (7815267409).

47868512531 is an equidigital number, since it uses as much as digits as its factorization.

47868512531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976908433 (or 976908426 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 50.

The spelling of 47868512531 in words is "forty-seven billion, eight hundred sixty-eight million, five hundred twelve thousand, five hundred thirty-one".