2158706204928 has 1440 divisors, whose sum is σ = 8315626457600. Its totient is φ = 553063956480.

The previous prime is 2158706204923. The next prime is 2158706204939. The reversal of 2158706204928 is 8294026078512.

2158706204928 is a `hidden beast` number, since 2 + 1 + 5 + 8 + 7 + 0 + 620 + 4 + 9 + 2 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2158706204923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 3421087173 + ... + 3421087803.

Almost surely, 2^{2158706204928} is an apocalyptic number.

2158706204928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2158706204928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4157813228800).

2158706204928 is an abundant number, since it is smaller than the sum of its proper divisors (6156920252672).

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

2158706204928 is an equidigital number, since it uses as much as digits as its factorization.

2158706204928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730 (or 693 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 2158706204928 in words is "two trillion, one hundred fifty-eight billion, seven hundred six million, two hundred four thousand, nine hundred twenty-eight".