6986774155373 has 16 divisors (see below), whose sum is σ = 7441190286000. Its totient is φ = 6547482450432.

The previous prime is 6986774155343. The next prime is 6986774155397. The reversal of 6986774155373 is 3735514776896.

It can be written as a sum of positive squares in 8 ways, for example, as 4095369784804 + 2891404370569 = 2023702^2 + 1700413^2 .

It is a cyclic number.

It is not a de Polignac number, because 6986774155373 - 2²⁴ = 6986757378157 is a prime.

It is a Smith number, since the sum of its digits (71) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6986774155297 and 6986774155306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6986774155343) 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, 7521338 + ... + 8399051.

It is an arithmetic number, because the mean of its divisors is an integer number (465074392875).

Almost surely, 2^{6986774155373} is an apocalyptic number.

It is an amenable number.

6986774155373 is a deficient number, since it is larger than the sum of its proper divisors (454416130627).

6986774155373 is a wasteful number, since it uses less digits than its factorization.

6986774155373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15920864.

The product of its digits is 800150400, while the sum is 71.

The spelling of 6986774155373 in words is "six trillion, nine hundred eighty-six billion, seven hundred seventy-four million, one hundred fifty-five thousand, three hundred seventy-three".