2115055521580 has 96 divisors (see below), whose sum is σ = 4625923659840. Its totient is φ = 811321082880.

The previous prime is 2115055521571. The next prime is 2115055521647. The reversal of 2115055521580 is 851255505112.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106450807 + ... + 106470673.

It is an arithmetic number, because the mean of its divisors is an integer number (48186704790).

Almost surely, 2^{2115055521580} is an apocalyptic number.

2115055521580 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 2115055521580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2312961829920).

2115055521580 is an abundant number, since it is smaller than the sum of its proper divisors (2510868138260).

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

2115055521580 is a wasteful number, since it uses less digits than its factorization.

2115055521580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21139 (or 21137 counting only the distinct ones).

The product of its (nonzero) digits is 100000, while the sum is 40.

The spelling of 2115055521580 in words is "two trillion, one hundred fifteen billion, fifty-five million, five hundred twenty-one thousand, five hundred eighty".