1172912899285 has 4 divisors (see below), whose sum is σ = 1407495479148. Its totient is φ = 938330319424.

The previous prime is 1172912899261. The next prime is 1172912899289. The reversal of 1172912899285 is 5829982192711.

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 597000384964 + 575912514321 = 772658^2 + 758889^2 .

It is a cyclic number.

It is not a de Polignac number, because 1172912899285 - 2¹³ = 1172912891093 is a prime.

It is a super-2 number, since 2×1172912899285² (a number of 25 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 (1172912899289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117291289924 + ... + 117291289933.

It is an arithmetic number, because the mean of its divisors is an integer number (351873869787).

Almost surely, 2^{1172912899285} is an apocalyptic number.

It is an amenable number.

1172912899285 is a deficient number, since it is larger than the sum of its proper divisors (234582579863).

1172912899285 is an equidigital number, since it uses as much as digits as its factorization.

1172912899285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234582579862.

The product of its digits is 13063680, while the sum is 64.

The spelling of 1172912899285 in words is "one trillion, one hundred seventy-two billion, nine hundred twelve million, eight hundred ninety-nine thousand, two hundred eighty-five".