2150621216560 has 80 divisors (see below), whose sum is σ = 5036292612000. Its totient is φ = 854043865088.

The previous prime is 2150621216551. The next prime is 2150621216561. The reversal of 2150621216560 is 656121260512.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (2150621216561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24117336 + ... + 24206344.

It is an arithmetic number, because the mean of its divisors is an integer number (62953657650).

Almost surely, 2^{2150621216560} is an apocalyptic number.

2150621216560 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 2150621216560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2518146306000).

2150621216560 is an abundant number, since it is smaller than the sum of its proper divisors (2885671395440).

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

2150621216560 is a wasteful number, since it uses less digits than its factorization.

2150621216560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91198 (or 91192 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 2150621216560 in words is "two trillion, one hundred fifty billion, six hundred twenty-one million, two hundred sixteen thousand, five hundred sixty".