11687215823 has 2 divisors, whose sum is σ = 11687215824. Its totient is φ = 11687215822.

The previous prime is 11687215801. The next prime is 11687215861. The reversal of 11687215823 is 32851278611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11687215823 - 2³² = 7392248527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11687215873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5843607911 + 5843607912.

It is an arithmetic number, because the mean of its divisors is an integer number (5843607912).

Almost surely, 2^11687215823 is an apocalyptic number.

11687215823 is a deficient number, since it is larger than the sum of its proper divisors (1).

11687215823 is an equidigital number, since it uses as much as digits as its factorization.

11687215823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 44.

The spelling of 11687215823 in words is "eleven billion, six hundred eighty-seven million, two hundred fifteen thousand, eight hundred twenty-three".