82965121493 has 2 divisors, whose sum is σ = 82965121494. Its totient is φ = 82965121492.

The previous prime is 82965121487. The next prime is 82965121513. The reversal of 82965121493 is 39412156928.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65483786404 + 17481335089 = 255898^2 + 132217^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82965121493 is a prime.

It is a super-2 number, since 2×82965121493² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82965121093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41482560746 + 41482560747.

It is an arithmetic number, because the mean of its divisors is an integer number (41482560747).

Almost surely, 2^82965121493 is an apocalyptic number.

It is an amenable number.

82965121493 is a deficient number, since it is larger than the sum of its proper divisors (1).

82965121493 is an equidigital number, since it uses as much as digits as its factorization.

82965121493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 50.

The spelling of 82965121493 in words is "eighty-two billion, nine hundred sixty-five million, one hundred twenty-one thousand, four hundred ninety-three".