1345312643643 has 32 divisors (see below), whose sum is σ = 2101121310720. Its totient is φ = 849476730240.

The previous prime is 1345312643641. The next prime is 1345312643651. The reversal of 1345312643643 is 3463462135431.

1345312643643 is a `hidden beast` number, since 1 + 3 + 4 + 53 + 126 + 436 + 43 = 666.

It is not a de Polignac number, because 1345312643643 - 2¹ = 1345312643641 is a prime.

It is a super-2 number, since 2×1345312643643² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1345312643641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17059630 + ... + 17138307.

It is an arithmetic number, because the mean of its divisors is an integer number (65660040960).

Almost surely, 2^{1345312643643} is an apocalyptic number.

1345312643643 is a deficient number, since it is larger than the sum of its proper divisors (755808667077).

1345312643643 is a wasteful number, since it uses less digits than its factorization.

1345312643643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34198024 (or 34198018 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 45.

The spelling of 1345312643643 in words is "one trillion, three hundred forty-five billion, three hundred twelve million, six hundred forty-three thousand, six hundred forty-three".