1117213872887 has 16 divisors (see below), whose sum is σ = 1357579284480. Its totient is φ = 897510703488.

The previous prime is 1117213872877. The next prime is 1117213872911. The reversal of 1117213872887 is 7882783127111.

It is not a de Polignac number, because 1117213872887 - 2⁶ = 1117213872823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117213872877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19612463 + ... + 19669344.

It is an arithmetic number, because the mean of its divisors is an integer number (84848705280).

Almost surely, 2^{1117213872887} is an apocalyptic number.

1117213872887 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1117213872887 is a deficient number, since it is larger than the sum of its proper divisors (240365411593).

1117213872887 is a wasteful number, since it uses less digits than its factorization.

1117213872887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39282070.

The product of its digits is 2107392, while the sum is 56.

Adding to 1117213872887 its reverse (7882783127111), we get a palindrome (8999996999998).

The spelling of 1117213872887 in words is "one trillion, one hundred seventeen billion, two hundred thirteen million, eight hundred seventy-two thousand, eight hundred eighty-seven".