2143522555512 has 128 divisors (see below), whose sum is σ = 5781788812800. Its totient is φ = 658316302848.

The previous prime is 2143522555511. The next prime is 2143522555613. The reversal of 2143522555512 is 2155552253412.

It is a super-4 number, since 4×2143522555512⁴ (a number of 50 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143522555511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 458113189 + ... + 458117867.

It is an arithmetic number, because the mean of its divisors is an integer number (45170225100).

Almost surely, 2^{2143522555512} is an apocalyptic number.

It is an amenable number.

2143522555512 is an abundant number, since it is smaller than the sum of its proper divisors (3638266257288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2143522555512 is a wasteful number, since it uses less digits than its factorization.

2143522555512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7125 (or 7121 counting only the distinct ones).

The product of its digits is 600000, while the sum is 42.

The spelling of 2143522555512 in words is "two trillion, one hundred forty-three billion, five hundred twenty-two million, five hundred fifty-five thousand, five hundred twelve".