12555400105501 has 8 divisors (see below), whose sum is σ = 13767767993664. Its totient is φ = 11354860197120.

The previous prime is 12555400105481. The next prime is 12555400105543. The reversal of 12555400105501 is 10550100455521.

12555400105501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12555400105501 - 2²⁵ = 12555366551069 is a prime.

It is a super-2 number, since 2×12555400105501² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12555400105601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2956992721 + ... + 2956996966.

It is an arithmetic number, because the mean of its divisors is an integer number (1720970999208).

Almost surely, 2^{12555400105501} is an apocalyptic number.

12555400105501 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12555400105501 is a deficient number, since it is larger than the sum of its proper divisors (1212367888163).

12555400105501 is a wasteful number, since it uses less digits than its factorization.

12555400105501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5913989891.

The product of its (nonzero) digits is 25000, while the sum is 34.

The spelling of 12555400105501 in words is "twelve trillion, five hundred fifty-five billion, four hundred million, one hundred five thousand, five hundred one".