11616211987 has 2 divisors, whose sum is σ = 11616211988. Its totient is φ = 11616211986.

The previous prime is 11616211951. The next prime is 11616212029. The reversal of 11616211987 is 78911261611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11616211987 - 2¹⁵ = 11616179219 is a prime.

It is not a weakly prime, because it can be changed into another prime (11616221987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5808105993 + 5808105994.

It is an arithmetic number, because the mean of its divisors is an integer number (5808105994).

Almost surely, 2^11616211987 is an apocalyptic number.

11616211987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11616211987 is an equidigital number, since it uses as much as digits as its factorization.

11616211987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 43.

The spelling of 11616211987 in words is "eleven billion, six hundred sixteen million, two hundred eleven thousand, nine hundred eighty-seven".