1322801778960 has 120 divisors (see below), whose sum is σ = 4606943053440. Its totient is φ = 352747135872.

The previous prime is 1322801778919. The next prime is 1322801778971. The reversal of 1322801778960 is 698771082231.

It is a happy number.

1322801778960 is a `hidden beast` number, since 132 + 280 + 177 + 8 + 9 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1322801778897 and 1322801778906.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34003240 + ... + 34042119.

It is an arithmetic number, because the mean of its divisors is an integer number (38391192112).

Almost surely, 2^{1322801778960} is an apocalyptic number.

1322801778960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322801778960 is an abundant number, since it is smaller than the sum of its proper divisors (3284141274480).

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

1322801778960 is an equidigital number, since it uses as much as digits as its factorization.

1322801778960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68045387 (or 68045369 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 1322801778960 in words is "one trillion, three hundred twenty-two billion, eight hundred one million, seven hundred seventy-eight thousand, nine hundred sixty".