12855262542 has 32 divisors (see below), whose sum is σ = 26317146240. Its totient is φ = 4184050080.

The previous prime is 12855262531. The next prime is 12855262577. The reversal of 12855262542 is 24526255821.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12855262494 and 12855262503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1022917 + ... + 1035407.

It is an arithmetic number, because the mean of its divisors is an integer number (822410820).

Almost surely, 2^12855262542 is an apocalyptic number.

12855262542 is an abundant number, since it is smaller than the sum of its proper divisors (13461883698).

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

12855262542 is a wasteful number, since it uses less digits than its factorization.

12855262542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16528.

The product of its digits is 384000, while the sum is 42.

The spelling of 12855262542 in words is "twelve billion, eight hundred fifty-five million, two hundred sixty-two thousand, five hundred forty-two".