2685932198129 has 4 divisors (see below), whose sum is σ = 2693902323684. Its totient is φ = 2677962072576.

The previous prime is 2685932198099. The next prime is 2685932198141. The reversal of 2685932198129 is 9218912395862.

2685932198129 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 1352720194225 + 1333212003904 = 1163065^2 + 1154648^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2685932198129 is a prime.

It is a super-2 number, since 2×2685932198129² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2685932194129) 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, 3985062272 + ... + 3985062945.

It is an arithmetic number, because the mean of its divisors is an integer number (673475580921).

Almost surely, 2^{2685932198129} is an apocalyptic number.

It is an amenable number.

2685932198129 is a deficient number, since it is larger than the sum of its proper divisors (7970125555).

2685932198129 is an equidigital number, since it uses as much as digits as its factorization.

2685932198129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7970125554.

The product of its digits is 33592320, while the sum is 65.

The spelling of 2685932198129 in words is "two trillion, six hundred eighty-five billion, nine hundred thirty-two million, one hundred ninety-eight thousand, one hundred twenty-nine".