47401367581 has 2 divisors, whose sum is σ = 47401367582. Its totient is φ = 47401367580.

The previous prime is 47401367567. The next prime is 47401367677. The reversal of 47401367581 is 18576310474.

47401367581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47310165081 + 91202500 = 217509^2 + 9550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47401367581 is a prime.

It is a super-2 number, since 2×47401367581² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47401367551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23700683790 + 23700683791.

It is an arithmetic number, because the mean of its divisors is an integer number (23700683791).

Almost surely, 2^47401367581 is an apocalyptic number.

It is an amenable number.

47401367581 is a deficient number, since it is larger than the sum of its proper divisors (1).

47401367581 is an equidigital number, since it uses as much as digits as its factorization.

47401367581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 47401367581 in words is "forty-seven billion, four hundred one million, three hundred sixty-seven thousand, five hundred eighty-one".