12555315542 has 16 divisors (see below), whose sum is σ = 23480070912. Its totient is φ = 4891681320.

The previous prime is 12555315533. The next prime is 12555315551. The reversal of 12555315542 is 24551355521.

It is an interprime number because it is at equal distance from previous prime (12555315533) and next prime (12555315551).

It is a junction number, because it is equal to n+sod(n) for n = 12555315496 and 12555315505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40763858 + ... + 40764165.

It is an arithmetic number, because the mean of its divisors is an integer number (1467504432).

Almost surely, 2^12555315542 is an apocalyptic number.

12555315542 is a deficient number, since it is larger than the sum of its proper divisors (10924755370).

12555315542 is a wasteful number, since it uses less digits than its factorization.

12555315542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81528043.

The product of its digits is 150000, while the sum is 38.

The spelling of 12555315542 in words is "twelve billion, five hundred fifty-five million, three hundred fifteen thousand, five hundred forty-two".