8613543492949 has 4 divisors (see below), whose sum is σ = 9120222521964. Its totient is φ = 8106864463936.

The previous prime is 8613543492913. The next prime is 8613543492959. The reversal of 8613543492949 is 9492943453168.

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 7373478622225 + 1240064870724 = 2715415^2 + 1113582^2 .

It is a cyclic number.

It is not a de Polignac number, because 8613543492949 - 2¹¹ = 8613543490901 is a prime.

It is a super-2 number, since 2×8613543492949² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8613543492959) 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, 253339514482 + ... + 253339514515.

It is an arithmetic number, because the mean of its divisors is an integer number (2280055630491).

Almost surely, 2^{8613543492949} is an apocalyptic number.

It is an amenable number.

8613543492949 is a deficient number, since it is larger than the sum of its proper divisors (506679029015).

8613543492949 is a wasteful number, since it uses less digits than its factorization.

8613543492949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506679029014.

The product of its digits is 201553920, while the sum is 67.

The spelling of 8613543492949 in words is "eight trillion, six hundred thirteen billion, five hundred forty-three million, four hundred ninety-two thousand, nine hundred forty-nine".