47446420685 has 4 divisors (see below), whose sum is σ = 56935704828. Its totient is φ = 37957136544.

The previous prime is 47446420649. The next prime is 47446420727. The reversal of 47446420685 is 58602464474.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20340749641 + 27105671044 = 142621^2 + 164638^2 .

It is a cyclic number.

It is not a de Polignac number, because 47446420685 - 2²⁸ = 47177985229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4744642064 + ... + 4744642073.

It is an arithmetic number, because the mean of its divisors is an integer number (14233926207).

Almost surely, 2^47446420685 is an apocalyptic number.

It is an amenable number.

47446420685 is a deficient number, since it is larger than the sum of its proper divisors (9489284143).

47446420685 is an equidigital number, since it uses as much as digits as its factorization.

47446420685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9489284142.

The product of its (nonzero) digits is 5160960, while the sum is 50.

The spelling of 47446420685 in words is "forty-seven billion, four hundred forty-six million, four hundred twenty thousand, six hundred eighty-five".