2158203206250 has 576 divisors, whose sum is σ = 7223117690880. Its totient is φ = 453487680000.

The previous prime is 2158203206249. The next prime is 2158203206281. The reversal of 2158203206250 is 526023028512.

It is a happy number.

2158203206250 is a `hidden beast` number, since 2 + 1 + 5 + 8 + 2 + 0 + 3 + 20 + 625 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 1499793031 + ... + 1499794469.

It is an arithmetic number, because the mean of its divisors is an integer number (12540134880).

Almost surely, 2^{2158203206250} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2158203206250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3611558845440).

2158203206250 is an abundant number, since it is smaller than the sum of its proper divisors (5064914484630).

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

2158203206250 is a wasteful number, since it uses less digits than its factorization.

2158203206250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785 (or 1762 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 2158203206250 in words is "two trillion, one hundred fifty-eight billion, two hundred three million, two hundred six thousand, two hundred fifty".