8249013013613 has 4 divisors (see below), whose sum is σ = 8250566797980. Its totient is φ = 8247459229248.

The previous prime is 8249013013573. The next prime is 8249013013639. The reversal of 8249013013613 is 3163103109428.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3636427791364 + 4612585222249 = 1906942^2 + 2147693^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8249013013613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8249013012613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776884220 + ... + 776894837.

It is an arithmetic number, because the mean of its divisors is an integer number (2062641699495).

Almost surely, 2^{8249013013613} is an apocalyptic number.

It is an amenable number.

8249013013613 is a deficient number, since it is larger than the sum of its proper divisors (1553784367).

8249013013613 is a wasteful number, since it uses less digits than its factorization.

8249013013613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553784366.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 8249013013613 in words is "eight trillion, two hundred forty-nine billion, thirteen million, thirteen thousand, six hundred thirteen".