5645105642771 has 4 divisors (see below), whose sum is σ = 6451549306032. Its totient is φ = 4838661979512.

The previous prime is 5645105642747. The next prime is 5645105642783. The reversal of 5645105642771 is 1772465015465.

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 5645105642771 - 2¹⁸ = 5645105380627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5645105641771) 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, 403221831620 + ... + 403221831633.

It is an arithmetic number, because the mean of its divisors is an integer number (1612887326508).

Almost surely, 2^{5645105642771} is an apocalyptic number.

5645105642771 is a deficient number, since it is larger than the sum of its proper divisors (806443663261).

5645105642771 is an equidigital number, since it uses as much as digits as its factorization.

5645105642771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806443663260.

The product of its (nonzero) digits is 7056000, while the sum is 53.

The spelling of 5645105642771 in words is "five trillion, six hundred forty-five billion, one hundred five million, six hundred forty-two thousand, seven hundred seventy-one".