2129789574612 has 60 divisors (see below), whose sum is σ = 6363075032160. Its totient is φ = 608511306384.

The previous prime is 2129789574607. The next prime is 2129789574613. The reversal of 2129789574612 is 2164759879212.

2129789574612 is a `hidden beast` number, since 2 + 1 + 2 + 9 + 7 + 8 + 9 + 5 + 7 + 4 + 612 = 666.

It is a super-3 number, since 3×2129789574612³ (a number of 38 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 2129789574612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129789574613) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 469528062 + ... + 469532597.

It is an arithmetic number, because the mean of its divisors is an integer number (106051250536).

Almost surely, 2^{2129789574612} is an apocalyptic number.

It is an amenable number.

2129789574612 is an abundant number, since it is smaller than the sum of its proper divisors (4233285457548).

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

2129789574612 is a wasteful number, since it uses less digits than its factorization.

2129789574612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939060682 (or 939060671 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 63.

The spelling of 2129789574612 in words is "two trillion, one hundred twenty-nine billion, seven hundred eighty-nine million, five hundred seventy-four thousand, six hundred twelve".