1645316443675 has 24 divisors (see below), whose sum is σ = 2041880422400. Its totient is φ = 1315164638880.

The previous prime is 1645316443669. The next prime is 1645316443717. The reversal of 1645316443675 is 5763446135461.

It is not a de Polignac number, because 1645316443675 - 2²¹ = 1645314346523 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 236155042 + ... + 236162008.

Almost surely, 2^{1645316443675} is an apocalyptic number.

1645316443675 is a deficient number, since it is larger than the sum of its proper divisors (396563978725).

1645316443675 is a wasteful number, since it uses less digits than its factorization.

1645316443675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13435 (or 13430 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 55.

The spelling of 1645316443675 in words is "one trillion, six hundred forty-five billion, three hundred sixteen million, four hundred forty-three thousand, six hundred seventy-five".