1206504877117 has 4 divisors (see below), whose sum is σ = 1206547019100. Its totient is φ = 1206462735136.

The previous prime is 1206504877103. The next prime is 1206504877157. The reversal of 1206504877117 is 7117784056021.

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 204381751396 + 1002123125721 = 452086^2 + 1001061^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1206504877117 is a prime.

It is a Smith number, since the sum of its digits (49) 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206504877157) 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, 21028018 + ... + 21085315.

It is an arithmetic number, because the mean of its divisors is an integer number (301636754775).

Almost surely, 2^{1206504877117} is an apocalyptic number.

It is an amenable number.

1206504877117 is a deficient number, since it is larger than the sum of its proper divisors (42141983).

1206504877117 is an equidigital number, since it uses as much as digits as its factorization.

1206504877117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42141982.

The product of its (nonzero) digits is 658560, while the sum is 49.

The spelling of 1206504877117 in words is "one trillion, two hundred six billion, five hundred four million, eight hundred seventy-seven thousand, one hundred seventeen".