1645340641141 has 4 divisors (see below), whose sum is σ = 1651154565952. Its totient is φ = 1639526716332.

The previous prime is 1645340641051. The next prime is 1645340641151. The reversal of 1645340641141 is 1411460435461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1645340641141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1645340641094 and 1645340641103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645340641151) 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, 2906961981 + ... + 2906962546.

It is an arithmetic number, because the mean of its divisors is an integer number (412788641488).

Almost surely, 2^{1645340641141} is an apocalyptic number.

It is an amenable number.

1645340641141 is a deficient number, since it is larger than the sum of its proper divisors (5813924811).

1645340641141 is an equidigital number, since it uses as much as digits as its factorization.

1645340641141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5813924810.

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 1645340641141 in words is "one trillion, six hundred forty-five billion, three hundred forty million, six hundred forty-one thousand, one hundred forty-one".