11686231537 has 2 divisors, whose sum is σ = 11686231538. Its totient is φ = 11686231536.

The previous prime is 11686231507. The next prime is 11686231549. The reversal of 11686231537 is 73513268611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6934059441 + 4752172096 = 83271^2 + 68936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11686231537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11686231493 and 11686231502.

It is not a weakly prime, because it can be changed into another prime (11686231507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5843115768 + 5843115769.

It is an arithmetic number, because the mean of its divisors is an integer number (5843115769).

Almost surely, 2^11686231537 is an apocalyptic number.

It is an amenable number.

11686231537 is a deficient number, since it is larger than the sum of its proper divisors (1).

11686231537 is an equidigital number, since it uses as much as digits as its factorization.

11686231537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 43.

The spelling of 11686231537 in words is "eleven billion, six hundred eighty-six million, two hundred thirty-one thousand, five hundred thirty-seven".