2021545134163 has 4 divisors (see below), whose sum is σ = 2036300938200. Its totient is φ = 2006789330128.

The previous prime is 2021545134151. The next prime is 2021545134173. The reversal of 2021545134163 is 3614315451202.

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 2021545134163 - 2⁵ = 2021545134131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021545134143) 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 3 ways as a sum of consecutive naturals, for example, 7377901813 + ... + 7377902086.

It is an arithmetic number, because the mean of its divisors is an integer number (509075234550).

Almost surely, 2^{2021545134163} is an apocalyptic number.

2021545134163 is a deficient number, since it is larger than the sum of its proper divisors (14755804037).

2021545134163 is a wasteful number, since it uses less digits than its factorization.

2021545134163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14755804036.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 2021545134163 in words is "two trillion, twenty-one billion, five hundred forty-five million, one hundred thirty-four thousand, one hundred sixty-three".