6135886561 has 4 divisors (see below), whose sum is σ = 7012441792. Its totient is φ = 5259331332.

The previous prime is 6135886531. The next prime is 6135886567. The reversal of 6135886561 is 1656885316.

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 a de Polignac number, because none of the positive numbers 2^k-6135886561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6135886567) 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, 438277605 + ... + 438277618.

It is an arithmetic number, because the mean of its divisors is an integer number (1753110448).

Almost surely, 2^6135886561 is an apocalyptic number.

It is an amenable number.

6135886561 is a deficient number, since it is larger than the sum of its proper divisors (876555231).

6135886561 is an equidigital number, since it uses as much as digits as its factorization.

6135886561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876555230.

The product of its digits is 1036800, while the sum is 49.

The square root of 6135886561 is about 78331.9000216387. The cubic root of 6135886561 is about 1830.7362203419.

The spelling of 6135886561 in words is "six billion, one hundred thirty-five million, eight hundred eighty-six thousand, five hundred sixty-one".