1018439877111 has 12 divisors (see below), whose sum is σ = 1419526787448. Its totient is φ = 649439920624.

The previous prime is 1018439877109. The next prime is 1018439877121. The reversal of 1018439877111 is 1117789348101.

It is not a de Polignac number, because 1018439877111 - 2¹ = 1018439877109 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1018439877121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 320867940 + ... + 320871113.

It is an arithmetic number, because the mean of its divisors is an integer number (118293898954).

Almost surely, 2^{1018439877111} is an apocalyptic number.

1018439877111 is a deficient number, since it is larger than the sum of its proper divisors (401086910337).

1018439877111 is an equidigital number, since it uses as much as digits as its factorization.

1018439877111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641739102 (or 641739079 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 51.

The spelling of 1018439877111 in words is "one trillion, eighteen billion, four hundred thirty-nine million, eight hundred seventy-seven thousand, one hundred eleven".