20315650456133 has 2 divisors, whose sum is σ = 20315650456134. Its totient is φ = 20315650456132.

The previous prime is 20315650456109. The next prime is 20315650456201. The reversal of 20315650456133 is 33165405651302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20314833811204 + 816644929 = 4507198^2 + 28577^2 .

It is a cyclic number.

It is not a de Polignac number, because 20315650456133 - 2²⁴ = 20315633678917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20315650456033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10157825228066 + 10157825228067.

It is an arithmetic number, because the mean of its divisors is an integer number (10157825228067).

Almost surely, 2^{20315650456133} is an apocalyptic number.

It is an amenable number.

20315650456133 is a deficient number, since it is larger than the sum of its proper divisors (1).

20315650456133 is an equidigital number, since it uses as much as digits as its factorization.

20315650456133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972000, while the sum is 44.

The spelling of 20315650456133 in words is "twenty trillion, three hundred fifteen billion, six hundred fifty million, four hundred fifty-six thousand, one hundred thirty-three".