12554005558 has 4 divisors (see below), whose sum is σ = 18831008340. Its totient is φ = 6277002778.

The previous prime is 12554005553. The next prime is 12554005561. The reversal of 12554005558 is 85550045521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85550045521 = 269 ⋅318029909.

It is a super-3 number, since 3×12554005558³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12554005558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12554005553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3138501388 + ... + 3138501391.

It is an arithmetic number, because the mean of its divisors is an integer number (4707752085).

Almost surely, 2^12554005558 is an apocalyptic number.

12554005558 is a deficient number, since it is larger than the sum of its proper divisors (6277002782).

12554005558 is an equidigital number, since it uses as much as digits as its factorization.

12554005558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6277002781.

The product of its (nonzero) digits is 200000, while the sum is 40.

The spelling of 12554005558 in words is "twelve billion, five hundred fifty-four million, five thousand, five hundred fifty-eight".