2556123635589 has 8 divisors (see below), whose sum is σ = 3556345927872. Its totient is φ = 1629991883520.

The previous prime is 2556123635587. The next prime is 2556123635591. The reversal of 2556123635589 is 9855363216552.

2556123635589 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2556123635587) and next prime (2556123635591).

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

It is not a de Polignac number, because 2556123635589 - 2¹ = 2556123635587 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556123635581) 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, 18522634972 + ... + 18522635109.

It is an arithmetic number, because the mean of its divisors is an integer number (444543240984).

Almost surely, 2^{2556123635589} is an apocalyptic number.

It is an amenable number.

2556123635589 is a deficient number, since it is larger than the sum of its proper divisors (1000222292283).

2556123635589 is a wasteful number, since it uses less digits than its factorization.

2556123635589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37045270107.

The product of its digits is 58320000, while the sum is 60.

The spelling of 2556123635589 in words is "two trillion, five hundred fifty-six billion, one hundred twenty-three million, six hundred thirty-five thousand, five hundred eighty-nine".