8318781506041 has 16 divisors (see below), whose sum is σ = 8437019852800. Its totient is φ = 8201529761040.

The previous prime is 8318781506017. The next prime is 8318781506069. The reversal of 8318781506041 is 1406051878138.

It is a cyclic number.

It is not a de Polignac number, because 8318781506041 - 2²¹ = 8318779408889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8318781506041.

It is not an unprimeable number, because it can be changed into a prime (8318781506011) 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, 12583060 + ... + 13227658.

It is an arithmetic number, because the mean of its divisors is an integer number (527313740800).

Almost surely, 2^{8318781506041} is an apocalyptic number.

It is an amenable number.

8318781506041 is a deficient number, since it is larger than the sum of its proper divisors (118238346759).

8318781506041 is a wasteful number, since it uses less digits than its factorization.

8318781506041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645364.

The product of its (nonzero) digits is 1290240, while the sum is 52.

The spelling of 8318781506041 in words is "eight trillion, three hundred eighteen billion, seven hundred eighty-one million, five hundred six thousand, forty-one".