2172020033653 has 2 divisors, whose sum is σ = 2172020033654. Its totient is φ = 2172020033652.

The previous prime is 2172020033641. The next prime is 2172020033719. The reversal of 2172020033653 is 3563300202712.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1611472835844 + 560547197809 = 1269438^2 + 748697^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2172020033653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2172027033653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086010016826 + 1086010016827.

It is an arithmetic number, because the mean of its divisors is an integer number (1086010016827).

Almost surely, 2^{2172020033653} is an apocalyptic number.

It is an amenable number.

2172020033653 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172020033653 is an equidigital number, since it uses as much as digits as its factorization.

2172020033653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 34.

The spelling of 2172020033653 in words is "two trillion, one hundred seventy-two billion, twenty million, thirty-three thousand, six hundred fifty-three".