47785817485 has 24 divisors (see below), whose sum is σ = 66743122176. Its totient is φ = 32748740640.

The previous prime is 47785817413. The next prime is 47785817567. The reversal of 47785817485 is 58471858774.

It is not a de Polignac number, because 47785817485 - 2¹¹ = 47785815437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 382140 + ... + 491530.

It is an arithmetic number, because the mean of its divisors is an integer number (2780963424).

Almost surely, 2^47785817485 is an apocalyptic number.

It is an amenable number.

47785817485 is a deficient number, since it is larger than the sum of its proper divisors (18957304691).

47785817485 is a wasteful number, since it uses less digits than its factorization.

47785817485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111193 (or 111186 counting only the distinct ones).

The product of its digits is 70246400, while the sum is 64.

It can be divided in two parts, 47785 and 817485, that added together give a triangular number (865270 = T₁₃₁₅).

The spelling of 47785817485 in words is "forty-seven billion, seven hundred eighty-five million, eight hundred seventeen thousand, four hundred eighty-five".