13445148644 has 12 divisors (see below), whose sum is σ = 23536718268. Its totient is φ = 6720372000.

The previous prime is 13445148643. The next prime is 13445148697. The reversal of 13445148644 is 44684154431.

13445148644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11318832100 + 2126316544 = 106390^2 + 46112^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13445148595 and 13445148604.

It is not an unprimeable number, because it can be changed into a prime (13445148641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536807 + ... + 561294.

It is an arithmetic number, because the mean of its divisors is an integer number (1961393189).

Almost surely, 2^13445148644 is an apocalyptic number.

It is an amenable number.

13445148644 is a deficient number, since it is larger than the sum of its proper divisors (10091569624).

13445148644 is a wasteful number, since it uses less digits than its factorization.

13445148644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101166 (or 1101164 counting only the distinct ones).

The product of its digits is 737280, while the sum is 44.

The spelling of 13445148644 in words is "thirteen billion, four hundred forty-five million, one hundred forty-eight thousand, six hundred forty-four".