2055999021216 has 192 divisors, whose sum is σ = 6450720933888. Its totient is φ = 560617694208.

The previous prime is 2055999021211. The next prime is 2055999021221. The reversal of 2055999021216 is 6121209995502.

It is an interprime number because it is at equal distance from previous prime (2055999021211) and next prime (2055999021221).

It is not an unprimeable number, because it can be changed into a prime (2055999021211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6696870 + ... + 6997146.

It is an arithmetic number, because the mean of its divisors is an integer number (33597504864).

Almost surely, 2^{2055999021216} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2055999021216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3225360466944).

2055999021216 is an abundant number, since it is smaller than the sum of its proper divisors (4394721912672).

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

2055999021216 is a wasteful number, since it uses less digits than its factorization.

2055999021216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300763 (or 300755 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 51.

The spelling of 2055999021216 in words is "two trillion, fifty-five billion, nine hundred ninety-nine million, twenty-one thousand, two hundred sixteen".