47401367681 has 2 divisors, whose sum is σ = 47401367682. Its totient is φ = 47401367680.

The previous prime is 47401367677. The next prime is 47401367683. The reversal of 47401367681 is 18676310474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47255803456 + 145564225 = 217384^2 + 12065^2 .

It is a cyclic number.

It is not a de Polignac number, because 47401367681 - 2² = 47401367677 is a prime.

It is a super-3 number, since 3×47401367681³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 47401367683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47401367683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23700683840 + 23700683841.

It is an arithmetic number, because the mean of its divisors is an integer number (23700683841).

Almost surely, 2^47401367681 is an apocalyptic number.

It is an amenable number.

47401367681 is a deficient number, since it is larger than the sum of its proper divisors (1).

47401367681 is an equidigital number, since it uses as much as digits as its factorization.

47401367681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 47.

The spelling of 47401367681 in words is "forty-seven billion, four hundred one million, three hundred sixty-seven thousand, six hundred eighty-one".