11535677612861 has 2 divisors, whose sum is σ = 11535677612862. Its totient is φ = 11535677612860.

The previous prime is 11535677612803. The next prime is 11535677612869. The reversal of 11535677612861 is 16821677653511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8884661911225 + 2651015701636 = 2980715^2 + 1628194^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11535677612861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11535677612861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11535677612869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5767838806430 + 5767838806431.

It is an arithmetic number, because the mean of its divisors is an integer number (5767838806431).

Almost surely, 2^{11535677612861} is an apocalyptic number.

It is an amenable number.

11535677612861 is a deficient number, since it is larger than the sum of its proper divisors (1).

11535677612861 is an equidigital number, since it uses as much as digits as its factorization.

11535677612861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12700800, while the sum is 59.

The spelling of 11535677612861 in words is "eleven trillion, five hundred thirty-five billion, six hundred seventy-seven million, six hundred twelve thousand, eight hundred sixty-one".