1645463465443 has 4 divisors (see below), whose sum is σ = 1880529674800. Its totient is φ = 1410397256088.

The previous prime is 1645463465351. The next prime is 1645463465479. The reversal of 1645463465443 is 3445643645461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1645463465443 - 2¹³ = 1645463457251 is a prime.

It is a super-2 number, since 2×1645463465443² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1645463465483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117533104668 + ... + 117533104681.

It is an arithmetic number, because the mean of its divisors is an integer number (470132418700).

Almost surely, 2^{1645463465443} is an apocalyptic number.

1645463465443 is a deficient number, since it is larger than the sum of its proper divisors (235066209357).

1645463465443 is an equidigital number, since it uses as much as digits as its factorization.

1645463465443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235066209356.

The product of its digits is 49766400, while the sum is 55.

The spelling of 1645463465443 in words is "one trillion, six hundred forty-five billion, four hundred sixty-three million, four hundred sixty-five thousand, four hundred forty-three".