13445465643 has 20 divisors (see below), whose sum is σ = 20464174368. Its totient is φ = 8794515600.

The previous prime is 13445465581. The next prime is 13445465651. The reversal of 13445465643 is 34656454431.

13445465643 is a `hidden beast` number, since 1 + 3 + 4 + 45 + 46 + 564 + 3 = 666.

It is not a de Polignac number, because 13445465643 - 2¹⁶ = 13445400107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13445465443) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1561683 + ... + 1570268.

Almost surely, 2^13445465643 is an apocalyptic number.

13445465643 is a deficient number, since it is larger than the sum of its proper divisors (7018708725).

13445465643 is an equidigital number, since it uses as much as digits as its factorization.

13445465643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3132016 (or 3132007 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 45.

The spelling of 13445465643 in words is "thirteen billion, four hundred forty-five million, four hundred sixty-five thousand, six hundred forty-three".