11662544021651 has 8 divisors (see below), whose sum is σ = 12013001827008. Its totient is φ = 11315229336000.

The previous prime is 11662544021647. The next prime is 11662544021669. The reversal of 11662544021651 is 15612044526611.

11662544021651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11662544021651 - 2² = 11662544021647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11662544021551) 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, 785772395 + ... + 785787236.

It is an arithmetic number, because the mean of its divisors is an integer number (1501625228376).

Almost surely, 2^{11662544021651} is an apocalyptic number.

11662544021651 is a deficient number, since it is larger than the sum of its proper divisors (350457805357).

11662544021651 is a wasteful number, since it uses less digits than its factorization.

11662544021651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571559853.

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 11662544021651 in words is "eleven trillion, six hundred sixty-two billion, five hundred forty-four million, twenty-one thousand, six hundred fifty-one".