11893251787 has 2 divisors, whose sum is σ = 11893251788. Its totient is φ = 11893251786.

The previous prime is 11893251739. The next prime is 11893251829. The reversal of 11893251787 is 78715239811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11893251787 - 2³¹ = 9745768139 is a prime.

It is not a weakly prime, because it can be changed into another prime (11893251287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5946625893 + 5946625894.

It is an arithmetic number, because the mean of its divisors is an integer number (5946625894).

Almost surely, 2^11893251787 is an apocalyptic number.

11893251787 is a deficient number, since it is larger than the sum of its proper divisors (1).

11893251787 is an equidigital number, since it uses as much as digits as its factorization.

11893251787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 52.

The spelling of 11893251787 in words is "eleven billion, eight hundred ninety-three million, two hundred fifty-one thousand, seven hundred eighty-seven".