47185472549 has 4 divisors (see below), whose sum is σ = 47185921740. Its totient is φ = 47185023360.

The previous prime is 47185472531. The next prime is 47185472573. The reversal of 47185472549 is 94527458174.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 9698704324 + 37486768225 = 98482^2 + 193615^2 .

It is a cyclic number.

It is not a de Polignac number, because 47185472549 - 2²⁰ = 47184423973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47185472494 and 47185472503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47185472519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26687 + ... + 308355.

It is an arithmetic number, because the mean of its divisors is an integer number (11796480435).

Almost surely, 2^47185472549 is an apocalyptic number.

It is an amenable number.

47185472549 is a deficient number, since it is larger than the sum of its proper divisors (449191).

47185472549 is a wasteful number, since it uses less digits than its factorization.

47185472549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449190.

The product of its digits is 11289600, while the sum is 56.

The spelling of 47185472549 in words is "forty-seven billion, one hundred eighty-five million, four hundred seventy-two thousand, five hundred forty-nine".