11990006611 has 4 divisors (see below), whose sum is σ = 13080007224. Its totient is φ = 10900006000.

The previous prime is 11990006603. The next prime is 11990006663. The reversal of 11990006611 is 11660009911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11990006611 - 2³ = 11990006603 is a prime.

11990006611 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11990066611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545000290 + ... + 545000311.

It is an arithmetic number, because the mean of its divisors is an integer number (3270001806).

Almost surely, 2^11990006611 is an apocalyptic number.

11990006611 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11990006611 is a deficient number, since it is larger than the sum of its proper divisors (1090000613).

11990006611 is a wasteful number, since it uses less digits than its factorization.

11990006611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090000612.

The product of its (nonzero) digits is 2916, while the sum is 34.

The spelling of 11990006611 in words is "eleven billion, nine hundred ninety million, six thousand, six hundred eleven".