2129012328258 has 96 divisors (see below), whose sum is σ = 4805087990976. Its totient is φ = 706505416128.

The previous prime is 2129012328241. The next prime is 2129012328259. The reversal of 2129012328258 is 8528232109212.

2129012328258 is a `hidden beast` number, since 2 + 1 + 290 + 1 + 232 + 82 + 58 = 666.

It is not an unprimeable number, because it can be changed into a prime (2129012328259) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 110113560 + ... + 110132892.

It is an arithmetic number, because the mean of its divisors is an integer number (50052999906).

Almost surely, 2^{2129012328258} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2129012328258, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2402543995488).

2129012328258 is an abundant number, since it is smaller than the sum of its proper divisors (2676075662718).

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

2129012328258 is a wasteful number, since it uses less digits than its factorization.

2129012328258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20350 (or 20338 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 2129012328258 in words is "two trillion, one hundred twenty-nine billion, twelve million, three hundred twenty-eight thousand, two hundred fifty-eight".