2155176089520 has 480 divisors, whose sum is σ = 7307279179200. Its totient is φ = 524726501376.

The previous prime is 2155176089483. The next prime is 2155176089533. The reversal of 2155176089520 is 259806715512.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 327680472 + ... + 327687048.

It is an arithmetic number, because the mean of its divisors is an integer number (15223498290).

Almost surely, 2^{2155176089520} is an apocalyptic number.

2155176089520 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 2155176089520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3653639589600).

2155176089520 is an abundant number, since it is smaller than the sum of its proper divisors (5152103089680).

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

2155176089520 is a wasteful number, since it uses less digits than its factorization.

2155176089520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6757 (or 6728 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 51.

The spelling of 2155176089520 in words is "two trillion, one hundred fifty-five billion, one hundred seventy-six million, eighty-nine thousand, five hundred twenty".