1028881567722 has 16 divisors (see below), whose sum is σ = 2066373025920. Its totient is φ = 341525540832.

The previous prime is 1028881567711. The next prime is 1028881567801. The reversal of 1028881567722 is 2277651888201.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358743883 + ... + 358746750.

It is an arithmetic number, because the mean of its divisors is an integer number (129148314120).

Almost surely, 2^{1028881567722} is an apocalyptic number.

1028881567722 is an abundant number, since it is smaller than the sum of its proper divisors (1037491458198).

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

1028881567722 is a wasteful number, since it uses less digits than its factorization.

1028881567722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717490877.

The product of its (nonzero) digits is 6021120, while the sum is 57.

The spelling of 1028881567722 in words is "one trillion, twenty-eight billion, eight hundred eighty-one million, five hundred sixty-seven thousand, seven hundred twenty-two".