47812566771681 has 16 divisors (see below), whose sum is σ = 63823501196928. Its totient is φ = 31838344448000.

The previous prime is 47812566771679. The next prime is 47812566771713. The reversal of 47812566771681 is 18617766521874.

It is a cyclic number.

It is not a de Polignac number, because 47812566771681 - 2¹ = 47812566771679 is a prime.

It is a super-2 number, since 2×47812566771681² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47812566771481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31297825 + ... + 32789921.

It is an arithmetic number, because the mean of its divisors is an integer number (3988968824808).

Almost surely, 2^{47812566771681} is an apocalyptic number.

It is an amenable number.

47812566771681 is a deficient number, since it is larger than the sum of its proper divisors (16010934425247).

47812566771681 is a wasteful number, since it uses less digits than its factorization.

47812566771681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504392.

The product of its digits is 189665280, while the sum is 69.

The spelling of 47812566771681 in words is "forty-seven trillion, eight hundred twelve billion, five hundred sixty-six million, seven hundred seventy-one thousand, six hundred eighty-one".