2021613673603 has 4 divisors (see below), whose sum is σ = 2022048340408. Its totient is φ = 2021179006800.

The previous prime is 2021613673591. The next prime is 2021613673621. The reversal of 2021613673603 is 3063763161202.

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 2021613673603 - 2²⁹ = 2021076802691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021613673643) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 217326426 + ... + 217335727.

It is an arithmetic number, because the mean of its divisors is an integer number (505512085102).

Almost surely, 2^{2021613673603} is an apocalyptic number.

2021613673603 is a deficient number, since it is larger than the sum of its proper divisors (434666805).

2021613673603 is an equidigital number, since it uses as much as digits as its factorization.

2021613673603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434666804.

The product of its (nonzero) digits is 163296, while the sum is 40.

The spelling of 2021613673603 in words is "two trillion, twenty-one billion, six hundred thirteen million, six hundred seventy-three thousand, six hundred three".