12555102555 has 24 divisors (see below), whose sum is σ = 21774104352. Its totient is φ = 6692385024.

The previous prime is 12555102541. The next prime is 12555102557. The reversal of 12555102555 is 55520155521.

12555102555 is a `hidden beast` number, since 1 + 2 + 55 + 51 + 0 + 2 + 555 = 666.

It is not a de Polignac number, because 12555102555 - 2¹² = 12555098459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12555102557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7587 + ... + 158643.

It is an arithmetic number, because the mean of its divisors is an integer number (907254348).

Almost surely, 2^12555102555 is an apocalyptic number.

12555102555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12555102555 is a deficient number, since it is larger than the sum of its proper divisors (9219001797).

12555102555 is a wasteful number, since it uses less digits than its factorization.

12555102555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152915 (or 152912 counting only the distinct ones).

The product of its (nonzero) digits is 62500, while the sum is 36.

The spelling of 12555102555 in words is "twelve billion, five hundred fifty-five million, one hundred two thousand, five hundred fifty-five".