47312722681 has 32 divisors (see below), whose sum is σ = 58291040000. Its totient is φ = 38279195136.

The previous prime is 47312722673. The next prime is 47312722687. The reversal of 47312722681 is 18622721374.

47312722681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47312722681 - 2³ = 47312722673 is a prime.

It is a super-2 number, since 2×47312722681² (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 (47312722687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1792105 + ... + 1818313.

It is an arithmetic number, because the mean of its divisors is an integer number (1821595000).

Almost surely, 2^47312722681 is an apocalyptic number.

It is an amenable number.

47312722681 is a deficient number, since it is larger than the sum of its proper divisors (10978317319).

47312722681 is a wasteful number, since it uses less digits than its factorization.

47312722681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26526 (or 26512 counting only the distinct ones).

The product of its digits is 225792, while the sum is 43.

The spelling of 47312722681 in words is "forty-seven billion, three hundred twelve million, seven hundred twenty-two thousand, six hundred eighty-one".