6997117865473 has 4 divisors (see below), whose sum is σ = 7167779276868. Its totient is φ = 6826456454080.

The previous prime is 6997117865431. The next prime is 6997117865501. The reversal of 6997117865473 is 3745687117996.

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 465653382544 + 6531464482929 = 682388^2 + 2555673^2 .

It is a cyclic number.

It is not a de Polignac number, because 6997117865473 - 2¹³ = 6997117857281 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6997117865396 and 6997117865405.

It is not an unprimeable number, because it can be changed into a prime (6997117862473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85330705636 + ... + 85330705717.

It is an arithmetic number, because the mean of its divisors is an integer number (1791944819217).

Almost surely, 2^{6997117865473} is an apocalyptic number.

It is an amenable number.

6997117865473 is a deficient number, since it is larger than the sum of its proper divisors (170661411395).

6997117865473 is a wasteful number, since it uses less digits than its factorization.

6997117865473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170661411394.

The product of its digits is 480090240, while the sum is 73.

The spelling of 6997117865473 in words is "six trillion, nine hundred ninety-seven billion, one hundred seventeen million, eight hundred sixty-five thousand, four hundred seventy-three".