2155158213120 has 1120 divisors, whose sum is σ = 8504654685120. Its totient is φ = 519202897920.

The previous prime is 2155158213053. The next prime is 2155158213157. The reversal of 2155158213120 is 213128515512.

2155158213120 is a `hidden beast` number, since 2 + 1 + 5 + 51 + 582 + 1 + 3 + 1 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 5686433091 + ... + 5686433469.

Almost surely, 2^{2155158213120} is an apocalyptic number.

2155158213120 is a gapful number since it is divisible by the number (20) 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 2155158213120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4252327342560).

2155158213120 is an abundant number, since it is smaller than the sum of its proper divisors (6349496472000).

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

2155158213120 is an equidigital number, since it uses as much as digits as its factorization.

2155158213120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708 (or 677 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 36.

The spelling of 2155158213120 in words is "two trillion, one hundred fifty-five billion, one hundred fifty-eight million, two hundred thirteen thousand, one hundred twenty".