6386056661261 has 4 divisors (see below), whose sum is σ = 6386540943552. Its totient is φ = 6385572378972.

The previous prime is 6386056661221. The next prime is 6386056661269. The reversal of 6386056661261 is 1621666506836.

It is a happy number.

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 6386056661261 - 2⁶ = 6386056661197 is a prime.

It is a super-2 number, since 2×6386056661261² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6386056661197 and 6386056661206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6386056661269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242121365 + ... + 242147738.

It is an arithmetic number, because the mean of its divisors is an integer number (1596635235888).

Almost surely, 2^{6386056661261} is an apocalyptic number.

It is an amenable number.

6386056661261 is a deficient number, since it is larger than the sum of its proper divisors (484282291).

6386056661261 is a wasteful number, since it uses less digits than its factorization.

6386056661261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484282290.

The product of its (nonzero) digits is 11197440, while the sum is 56.

The spelling of 6386056661261 in words is "six trillion, three hundred eighty-six billion, fifty-six million, six hundred sixty-one thousand, two hundred sixty-one".