999996555411111 has 8 divisors (see below), whose sum is σ = 1336183834212864. Its totient is φ = 665236823441720.

The previous prime is 999996555411083. The next prime is 999996555411131. The reversal of 999996555411111 is 111114555699999.

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 999996555411111 - 2²² = 999996551216807 is a prime.

It is a super-2 number, since 2×999996555411111² (a number of 31 digits) contains 22 as substring.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999996555411131) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356886706455 + ... + 356886709256.

It is an arithmetic number, because the mean of its divisors is an integer number (167022979276608).

Almost surely, 2^{999996555411111} is an apocalyptic number.

999996555411111 is a deficient number, since it is larger than the sum of its proper divisors (336187278801753).

999996555411111 is a wasteful number, since it uses less digits than its factorization.

999996555411111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713773416181.

The product of its digits is 177147000, while the sum is 75.

The spelling of 999996555411111 in words is "nine hundred ninety-nine trillion, nine hundred ninety-six billion, five hundred fifty-five million, four hundred eleven thousand, one hundred eleven".