83121332271569 has 2 divisors, whose sum is σ = 83121332271570. Its totient is φ = 83121332271568.

The previous prime is 83121332271371. The next prime is 83121332271587. The reversal of 83121332271569 is 96517223312138.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66319654241344 + 16801678030225 = 8143688^2 + 4098985^2 .

It is a cyclic number.

It is not a de Polignac number, because 83121332271569 - 2²⁴ = 83121315494353 is a prime.

It is a super-2 number, since 2×83121332271569² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 83121332271569.

It is not a weakly prime, because it can be changed into another prime (83121332276569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41560666135784 + 41560666135785.

It is an arithmetic number, because the mean of its divisors is an integer number (41560666135785).

Almost surely, 2^{83121332271569} is an apocalyptic number.

It is an amenable number.

83121332271569 is a deficient number, since it is larger than the sum of its proper divisors (1).

83121332271569 is an equidigital number, since it uses as much as digits as its factorization.

83121332271569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 53.

The spelling of 83121332271569 in words is "eighty-three trillion, one hundred twenty-one billion, three hundred thirty-two million, two hundred seventy-one thousand, five hundred sixty-nine".