6987836704133 has 4 divisors (see below), whose sum is σ = 6987842370348. Its totient is φ = 6987831037920.

The previous prime is 6987836704067. The next prime is 6987836704159. The reversal of 6987836704133 is 3314076387896.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6195882657409 + 791954046724 = 2489153^2 + 889918^2 .

It is a cyclic number.

It is not a de Polignac number, because 6987836704133 - 2¹² = 6987836700037 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 6987836704133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6987836704183) 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, 112166 + ... + 3740087.

It is an arithmetic number, because the mean of its divisors is an integer number (1746960592587).

Almost surely, 2^{6987836704133} is an apocalyptic number.

It is an amenable number.

6987836704133 is a deficient number, since it is larger than the sum of its proper divisors (5666215).

6987836704133 is a wasteful number, since it uses less digits than its factorization.

6987836704133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5666214.

The product of its (nonzero) digits is 109734912, while the sum is 65.

The spelling of 6987836704133 in words is "six trillion, nine hundred eighty-seven billion, eight hundred thirty-six million, seven hundred four thousand, one hundred thirty-three".