13166541064 has 8 divisors (see below), whose sum is σ = 24687264510. Its totient is φ = 6583270528.

The previous prime is 13166541049. The next prime is 13166541071. The reversal of 13166541064 is 46014566131.

It can be written as a sum of positive squares in only one way, i.e., 11119702500 + 2046838564 = 105450^2 + 45242^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 822908809 + ... + 822908824.

Almost surely, 2^13166541064 is an apocalyptic number.

It is an amenable number.

13166541064 is a deficient number, since it is larger than the sum of its proper divisors (11520723446).

13166541064 is a wasteful number, since it uses less digits than its factorization.

13166541064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645817639 (or 1645817635 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 13166541064 in words is "thirteen billion, one hundred sixty-six million, five hundred forty-one thousand, sixty-four".