20874331913353 has 2 divisors, whose sum is σ = 20874331913354. Its totient is φ = 20874331913352.

The previous prime is 20874331913317. The next prime is 20874331913381. The reversal of 20874331913353 is 35331913347802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20861617772304 + 12714141049 = 4567452^2 + 112757^2 .

It is a cyclic number.

It is not a de Polignac number, because 20874331913353 - 2²¹ = 20874329816201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20874331913353.

It is not a weakly prime, because it can be changed into another prime (20874331913153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10437165956676 + 10437165956677.

It is an arithmetic number, because the mean of its divisors is an integer number (10437165956677).

Almost surely, 2^{20874331913353} is an apocalyptic number.

It is an amenable number.

20874331913353 is a deficient number, since it is larger than the sum of its proper divisors (1).

20874331913353 is an equidigital number, since it uses as much as digits as its factorization.

20874331913353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4898880, while the sum is 52.

The spelling of 20874331913353 in words is "twenty trillion, eight hundred seventy-four billion, three hundred thirty-one million, nine hundred thirteen thousand, three hundred fifty-three".