82643247369 has 12 divisors (see below), whose sum is σ = 119998574592. Its totient is φ = 54807039000.

The previous prime is 82643247361. The next prime is 82643247391. The reversal of 82643247369 is 96374234628.

82643247369 is a `hidden beast` number, since 82 + 6 + 4 + 32 + 473 + 69 = 666.

It is not a de Polignac number, because 82643247369 - 2³ = 82643247361 is a prime.

It is a super-3 number, since 3×82643247369³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (82643247361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24036457 + ... + 24039894.

It is an arithmetic number, because the mean of its divisors is an integer number (9999881216).

Almost surely, 2^82643247369 is an apocalyptic number.

It is an amenable number.

82643247369 is a deficient number, since it is larger than the sum of its proper divisors (37355327223).

82643247369 is a wasteful number, since it uses less digits than its factorization.

82643247369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48076548 (or 48076545 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 54.

The spelling of 82643247369 in words is "eighty-two billion, six hundred forty-three million, two hundred forty-seven thousand, three hundred sixty-nine".