1000555555511 has 8 divisors (see below), whose sum is σ = 1044077211744. Its totient is φ = 957035502720.

The previous prime is 1000555555481. The next prime is 1000555555543. The reversal of 1000555555511 is 1155555550001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1000555555511 - 2¹⁰ = 1000555554487 is a prime.

It is a super-2 number, since 2×1000555555511² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000555555211) 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, 974771 + ... + 1717931.

It is an arithmetic number, because the mean of its divisors is an integer number (130509651468).

Almost surely, 2^{1000555555511} is an apocalyptic number.

1000555555511 is a deficient number, since it is larger than the sum of its proper divisors (43521656233).

1000555555511 is an equidigital number, since it uses as much as digits as its factorization.

1000555555511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801721.

The product of its (nonzero) digits is 78125, while the sum is 38.

The spelling of 1000555555511 in words is "one trillion, five hundred fifty-five million, five hundred fifty-five thousand, five hundred eleven".