47646866281 has 16 divisors (see below), whose sum is σ = 57394137600. Its totient is φ = 38687882688.

The previous prime is 47646866273. The next prime is 47646866287. The reversal of 47646866281 is 18266864674.

It is not a de Polignac number, because 47646866281 - 2³ = 47646866273 is a prime.

It is a super-2 number, since 2×47646866281² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47646866287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2203521 + ... + 2225038.

It is an arithmetic number, because the mean of its divisors is an integer number (3587133600).

Almost surely, 2^47646866281 is an apocalyptic number.

It is an amenable number.

47646866281 is a deficient number, since it is larger than the sum of its proper divisors (9747271319).

47646866281 is a wasteful number, since it uses less digits than its factorization.

47646866281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4428648.

The product of its digits is 18579456, while the sum is 58.

The spelling of 47646866281 in words is "forty-seven billion, six hundred forty-six million, eight hundred sixty-six thousand, two hundred eighty-one".