77182285489 has 27 divisors (see below), whose sum is σ = 82759159147. Its totient is φ = 71974605824.

The previous prime is 77182285483. The next prime is 77182285493. The reversal of 77182285489 is 98458228177.

The square root of 77182285489 is 277817.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 75985679025 + 1196606464 = 275655^2 + 34592^2 .

It is a de Polignac number, because none of the positive numbers 2^k-77182285489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77182285483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 300320049 + ... + 300320305.

Almost surely, 2^77182285489 is an apocalyptic number.

77182285489 is the 277817-th square number.

77182285489 is the 138909-th centered octagonal number.

It is an amenable number.

77182285489 is a deficient number, since it is larger than the sum of its proper divisors (5576873658).

77182285489 is an frugal number, since it uses more digits than its factorization.

77182285489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654 (or 327 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 61.

The spelling of 77182285489 in words is "seventy-seven billion, one hundred eighty-two million, two hundred eighty-five thousand, four hundred eighty-nine".