8261215643013 has 8 divisors (see below), whose sum is σ = 11015135253408. Its totient is φ = 5507386563984.

The previous prime is 8261215643011. The next prime is 8261215643029. The reversal of 8261215643013 is 3103465121628.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8261215643013 - 2¹ = 8261215643011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8261215643011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22419631 + ... + 22785132.

It is an arithmetic number, because the mean of its divisors is an integer number (1376891906676).

Almost surely, 2^{8261215643013} is an apocalyptic number.

It is an amenable number.

8261215643013 is a deficient number, since it is larger than the sum of its proper divisors (2753919610395).

8261215643013 is a wasteful number, since it uses less digits than its factorization.

8261215643013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45265683.

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 8261215643013 in words is "eight trillion, two hundred sixty-one billion, two hundred fifteen million, six hundred forty-three thousand, thirteen".