11606040021 has 16 divisors (see below), whose sum is σ = 15715616000. Its totient is φ = 7617475008.

The previous prime is 11606040007. The next prime is 11606040023. The reversal of 11606040021 is 12004060611.

It is not a de Polignac number, because 11606040021 - 2⁶ = 11606039957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11606040021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11606040023) 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 15 ways as a sum of consecutive naturals, for example, 12555 + ... + 152871.

It is an arithmetic number, because the mean of its divisors is an integer number (982226000).

Almost surely, 2^11606040021 is an apocalyptic number.

It is an amenable number.

11606040021 is a deficient number, since it is larger than the sum of its proper divisors (4109575979).

11606040021 is a wasteful number, since it uses less digits than its factorization.

11606040021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140748.

The product of its (nonzero) digits is 288, while the sum is 21.

The spelling of 11606040021 in words is "eleven billion, six hundred six million, forty thousand, twenty-one".