1055051221928 has 64 divisors (see below), whose sum is σ = 2289064432320. Its totient is φ = 450556748800.

The previous prime is 1055051221927. The next prime is 1055051221963. The reversal of 1055051221928 is 8291221505501.

It is a super-2 number, since 2×1055051221928² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1055051221927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215918 + ... + 1468578.

It is an arithmetic number, because the mean of its divisors is an integer number (35766631755).

Almost surely, 2^{1055051221928} 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 1055051221928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1144532216160).

1055051221928 is an abundant number, since it is smaller than the sum of its proper divisors (1234013210392).

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

1055051221928 is a wasteful number, since it uses less digits than its factorization.

1055051221928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253258 (or 1253254 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 41.

The spelling of 1055051221928 in words is "one trillion, fifty-five billion, fifty-one million, two hundred twenty-one thousand, nine hundred twenty-eight".