11986171076605 has 16 divisors (see below), whose sum is σ = 16516829044800. Its totient is φ = 8258414520960.

The previous prime is 11986171076599. The next prime is 11986171076617. The reversal of 11986171076605 is 50667017168911.

It is not a de Polignac number, because 11986171076605 - 2²³ = 11986162687997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11986171076605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5735009040 + ... + 5735011129.

It is an arithmetic number, because the mean of its divisors is an integer number (1032301815300).

Almost surely, 2^{11986171076605} is an apocalyptic number.

It is an amenable number.

11986171076605 is a deficient number, since it is larger than the sum of its proper divisors (4530657968195).

11986171076605 is a wasteful number, since it uses less digits than its factorization.

11986171076605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11470020204.

The product of its (nonzero) digits is 3810240, while the sum is 58.

The spelling of 11986171076605 in words is "eleven trillion, nine hundred eighty-six billion, one hundred seventy-one million, seventy-six thousand, six hundred five".