47918638085 has 8 divisors (see below), whose sum is σ = 57627102456. Its totient is φ = 38251752640.

The previous prime is 47918638067. The next prime is 47918638121. The reversal of 47918638085 is 58083681974.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1614914596 + 46303723489 = 40186^2 + 215183^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47918638085 - 2¹⁰ = 47918637061 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10392194 + ... + 10396803.

It is an arithmetic number, because the mean of its divisors is an integer number (7203387807).

Almost surely, 2^47918638085 is an apocalyptic number.

It is an amenable number.

47918638085 is a deficient number, since it is larger than the sum of its proper divisors (9708464371).

47918638085 is a wasteful number, since it uses less digits than its factorization.

47918638085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20789463.

The product of its (nonzero) digits is 11612160, while the sum is 59.

The spelling of 47918638085 in words is "forty-seven billion, nine hundred eighteen million, six hundred thirty-eight thousand, eighty-five".