11500656487 has 2 divisors, whose sum is σ = 11500656488. Its totient is φ = 11500656486.

The previous prime is 11500656439. The next prime is 11500656521. The reversal of 11500656487 is 78465600511.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11500656487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11500650487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5750328243 + 5750328244.

It is an arithmetic number, because the mean of its divisors is an integer number (5750328244).

Almost surely, 2^11500656487 is an apocalyptic number.

11500656487 is a deficient number, since it is larger than the sum of its proper divisors (1).

11500656487 is an equidigital number, since it uses as much as digits as its factorization.

11500656487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 11500656487 in words is "eleven billion, five hundred million, six hundred fifty-six thousand, four hundred eighty-seven".