82145634553 has 2 divisors, whose sum is σ = 82145634554. Its totient is φ = 82145634552.

The previous prime is 82145634497. The next prime is 82145634587. The reversal of 82145634553 is 35543654128.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43859668329 + 38285966224 = 209427^2 + 195668^2 .

It is a cyclic number.

It is not a de Polignac number, because 82145634553 - 2²⁹ = 81608763641 is a prime.

It is a super-2 number, since 2×82145634553² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (82145634353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41072817276 + 41072817277.

It is an arithmetic number, because the mean of its divisors is an integer number (41072817277).

Almost surely, 2^82145634553 is an apocalyptic number.

It is an amenable number.

82145634553 is a deficient number, since it is larger than the sum of its proper divisors (1).

82145634553 is an equidigital number, since it uses as much as digits as its factorization.

82145634553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728000, while the sum is 46.

The spelling of 82145634553 in words is "eighty-two billion, one hundred forty-five million, six hundred thirty-four thousand, five hundred fifty-three".