2055228906640 has 320 divisors, whose sum is σ = 5928060579840. Its totient is φ = 645270312960.

The previous prime is 2055228906631. The next prime is 2055228906649. The reversal of 2055228906640 is 466098225502.

It is an interprime number because it is at equal distance from previous prime (2055228906631) and next prime (2055228906649).

It is not an unprimeable number, because it can be changed into a prime (2055228906649) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 752554075 + ... + 752556805.

It is an arithmetic number, because the mean of its divisors is an integer number (18525189312).

Almost surely, 2^{2055228906640} is an apocalyptic number.

2055228906640 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 2055228906640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2964030289920).

2055228906640 is an abundant number, since it is smaller than the sum of its proper divisors (3872831673200).

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

2055228906640 is a wasteful number, since it uses less digits than its factorization.

2055228906640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3550 (or 3544 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 49.

The spelling of 2055228906640 in words is "two trillion, fifty-five billion, two hundred twenty-eight million, nine hundred six thousand, six hundred forty".