6709890025261 has 4 divisors (see below), whose sum is σ = 6926338090624. Its totient is φ = 6493441959900.

The previous prime is 6709890025259. The next prime is 6709890025291. The reversal of 6709890025261 is 1625200989076.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6709890025261 - 2¹ = 6709890025259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6709890025291) 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, 108224032635 + ... + 108224032696.

It is an arithmetic number, because the mean of its divisors is an integer number (1731584522656).

Almost surely, 2^{6709890025261} is an apocalyptic number.

It is an amenable number.

6709890025261 is a deficient number, since it is larger than the sum of its proper divisors (216448065363).

6709890025261 is a wasteful number, since it uses less digits than its factorization.

6709890025261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216448065362.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The spelling of 6709890025261 in words is "six trillion, seven hundred nine billion, eight hundred ninety million, twenty-five thousand, two hundred sixty-one".