82277774469 has 24 divisors (see below), whose sum is σ = 129817670112. Its totient is φ = 49800762720.

The previous prime is 82277774459. The next prime is 82277774519. The reversal of 82277774469 is 96447777228.

82277774469 is a `hidden beast` number, since 82 + 27 + 7 + 7 + 74 + 469 = 666.

It is not a de Polignac number, because 82277774469 - 2¹⁷ = 82277643397 is a prime.

It is a super-2 number, since 2×82277774469² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82277774459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 461047 + ... + 614100.

It is an arithmetic number, because the mean of its divisors is an integer number (5409069588).

Almost surely, 2^82277774469 is an apocalyptic number.

It is an amenable number.

82277774469 is a deficient number, since it is larger than the sum of its proper divisors (47539895643).

82277774469 is a wasteful number, since it uses less digits than its factorization.

82277774469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075937 (or 1075934 counting only the distinct ones).

The product of its digits is 66382848, while the sum is 63.

The spelling of 82277774469 in words is "eighty-two billion, two hundred seventy-seven million, seven hundred seventy-four thousand, four hundred sixty-nine".