11554165664145 has 80 divisors (see below), whose sum is σ = 22502527507152. Its totient is φ = 5637866250240.

The previous prime is 11554165664059. The next prime is 11554165664179. The reversal of 11554165664145 is 54146656145511.

11554165664145 is a `hidden beast` number, since 1 + 1 + 5 + 5 + 4 + 165 + 66 + 414 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 5369638293504 + 6184527370641 = 2317248^2 + 2486871^2 .

It is not a de Polignac number, because 11554165664145 - 2¹⁶ = 11554165598609 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 11554165664091 and 11554165664100.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 9115336 + ... + 10305225.

Almost surely, 2^{11554165664145} is an apocalyptic number.

11554165664145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11554165664145 is a deficient number, since it is larger than the sum of its proper divisors (10948361843007).

11554165664145 is a wasteful number, since it uses less digits than its factorization.

11554165664145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19420704 (or 19420695 counting only the distinct ones).

The product of its digits is 8640000, while the sum is 54.

The spelling of 11554165664145 in words is "eleven trillion, five hundred fifty-four billion, one hundred sixty-five million, six hundred sixty-four thousand, one hundred forty-five".