1011111008987 has 2 divisors, whose sum is σ = 1011111008988. Its totient is φ = 1011111008986.

The previous prime is 1011111008981. The next prime is 1011111009031. The reversal of 1011111008987 is 7898001111101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1011111008987 - 2²⁶ = 1011043900123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011111008987.

It is not a weakly prime, because it can be changed into another prime (1011111008981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505555504493 + 505555504494.

It is an arithmetic number, because the mean of its divisors is an integer number (505555504494).

Almost surely, 2^{1011111008987} is an apocalyptic number.

1011111008987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011111008987 is an equidigital number, since it uses as much as digits as its factorization.

1011111008987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 38.

The spelling of 1011111008987 in words is "one trillion, eleven billion, one hundred eleven million, eight thousand, nine hundred eighty-seven".