20132130321997 has 2 divisors, whose sum is σ = 20132130321998. Its totient is φ = 20132130321996.

The previous prime is 20132130321973. The next prime is 20132130322067. The reversal of 20132130321997 is 79912303123102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13556490703396 + 6575639618601 = 3681914^2 + 2564301^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20132130321997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20132130321967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066065160998 + 10066065160999.

It is an arithmetic number, because the mean of its divisors is an integer number (10066065160999).

Almost surely, 2^{20132130321997} is an apocalyptic number.

It is an amenable number.

20132130321997 is a deficient number, since it is larger than the sum of its proper divisors (1).

20132130321997 is an equidigital number, since it uses as much as digits as its factorization.

20132130321997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 43.

The spelling of 20132130321997 in words is "twenty trillion, one hundred thirty-two billion, one hundred thirty million, three hundred twenty-one thousand, nine hundred ninety-seven".