1005611000018 has 16 divisors (see below), whose sum is σ = 1543547924160. Its totient is φ = 491095812816.

The previous prime is 1005611000011. The next prime is 1005611000057. The reversal of 1005611000018 is 8100001165001.

It is a happy number.

It is a super-2 number, since 2×1005611000018² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1005610999957 and 1005611000002.

It is not an unprimeable number, because it can be changed into a prime (1005611000011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2602196 + ... + 2963552.

It is an arithmetic number, because the mean of its divisors is an integer number (96471745260).

Almost surely, 2^{1005611000018} is an apocalyptic number.

1005611000018 is a deficient number, since it is larger than the sum of its proper divisors (537936924142).

1005611000018 is a wasteful number, since it uses less digits than its factorization.

1005611000018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393761.

The product of its (nonzero) digits is 240, while the sum is 23.

Adding to 1005611000018 its reverse (8100001165001), we get a palindrome (9105612165019).

The spelling of 1005611000018 in words is "one trillion, five billion, six hundred eleven million, eighteen", and thus it is an aban number.