82390561542 has 12 divisors (see below), whose sum is σ = 178512883380. Its totient is φ = 27463520508.

The previous prime is 82390561529. The next prime is 82390561543. The reversal of 82390561542 is 24516509328.

82390561542 is a `hidden beast` number, since 8 + 2 + 39 + 0 + 561 + 54 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82390561543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2288626692 + ... + 2288626727.

It is an arithmetic number, because the mean of its divisors is an integer number (14876073615).

Almost surely, 2^82390561542 is an apocalyptic number.

82390561542 is an abundant number, since it is smaller than the sum of its proper divisors (96122321838).

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

82390561542 is a wasteful number, since it uses less digits than its factorization.

82390561542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4577253427 (or 4577253424 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 82390561542 in words is "eighty-two billion, three hundred ninety million, five hundred sixty-one thousand, five hundred forty-two".