2155526211500 has 96 divisors (see below), whose sum is σ = 4992681867264. Its totient is φ = 810175027200.

The previous prime is 2155526211497. The next prime is 2155526211523. The reversal of 2155526211500 is 51126255512.

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 31 ways as a sum of consecutive naturals, for example, 5038997 + ... + 5450003.

It is an arithmetic number, because the mean of its divisors is an integer number (52007102784).

Almost surely, 2^{2155526211500} is an apocalyptic number.

2155526211500 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 2155526211500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2496340933632).

2155526211500 is an abundant number, since it is smaller than the sum of its proper divisors (2837155655764).

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

2155526211500 is a wasteful number, since it uses less digits than its factorization.

2155526211500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411660 (or 411648 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 35.

The spelling of 2155526211500 in words is "two trillion, one hundred fifty-five billion, five hundred twenty-six million, two hundred eleven thousand, five hundred".