82798660242 has 80 divisors (see below), whose sum is σ = 196913250072. Its totient is φ = 25913986560.

The previous prime is 82798660127. The next prime is 82798660267. The reversal of 82798660242 is 24206689728.

82798660242 is a `hidden beast` number, since 8 + 27 + 9 + 8 + 6 + 602 + 4 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 56235853881 + 26562806361 = 237141^2 + 162981^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1123728 + ... + 1195140.

Almost surely, 2^82798660242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82798660242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98456625036).

82798660242 is an abundant number, since it is smaller than the sum of its proper divisors (114114589830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82798660242 is a wasteful number, since it uses less digits than its factorization.

82798660242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71865 (or 71856 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 82798660242 in words is "eighty-two billion, seven hundred ninety-eight million, six hundred sixty thousand, two hundred forty-two".