12555503534 has 48 divisors (see below), whose sum is σ = 22935384576. Its totient is φ = 5130140400.

The previous prime is 12555503503. The next prime is 12555503539. The reversal of 12555503534 is 43530555521.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12555503539) 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, 692039 + ... + 709949.

It is an arithmetic number, because the mean of its divisors is an integer number (477820512).

Almost surely, 2^12555503534 is an apocalyptic number.

12555503534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12555503534 is a deficient number, since it is larger than the sum of its proper divisors (10379881042).

12555503534 is a wasteful number, since it uses less digits than its factorization.

12555503534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18261 (or 18254 counting only the distinct ones).

The product of its (nonzero) digits is 225000, while the sum is 38.

The spelling of 12555503534 in words is "twelve billion, five hundred fifty-five million, five hundred three thousand, five hundred thirty-four".