11664666081654 has 16 divisors (see below), whose sum is σ = 23333553205248. Its totient is φ = 3887518520232.

The previous prime is 11664666081631. The next prime is 11664666081667. The reversal of 11664666081654 is 45618066646611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175840822 + ... + 175907145.

It is an arithmetic number, because the mean of its divisors is an integer number (1458347075328).

Almost surely, 2^{11664666081654} is an apocalyptic number.

11664666081654 is an abundant number, since it is smaller than the sum of its proper divisors (11668887123594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11664666081654 is a wasteful number, since it uses less digits than its factorization.

11664666081654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351753499.

The product of its (nonzero) digits is 29859840, while the sum is 60.

The spelling of 11664666081654 in words is "eleven trillion, six hundred sixty-four billion, six hundred sixty-six million, eighty-one thousand, six hundred fifty-four".