12555562681455 has 64 divisors (see below), whose sum is σ = 20482126291968. Its totient is φ = 6566354242560.

The previous prime is 12555562681451. The next prime is 12555562681469. The reversal of 12555562681455 is 55418626555521.

It is not a de Polignac number, because 12555562681455 - 2² = 12555562681451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12555562681451) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 223392417 + ... + 223448613.

It is an arithmetic number, because the mean of its divisors is an integer number (320033223312).

Almost surely, 2^{12555562681455} is an apocalyptic number.

12555562681455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12555562681455 is a deficient number, since it is larger than the sum of its proper divisors (7926563610513).

12555562681455 is a wasteful number, since it uses less digits than its factorization.

12555562681455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57456.

The product of its digits is 72000000, while the sum is 60.

The spelling of 12555562681455 in words is "twelve trillion, five hundred fifty-five billion, five hundred sixty-two million, six hundred eighty-one thousand, four hundred fifty-five".