797122308978 has 54 divisors (see below), whose sum is σ = 1741855826061. Its totient is φ = 263456159904.

The previous prime is 797122308967. The next prime is 797122309021. The reversal of 797122308978 is 879803221797.

It can be written as a sum of positive squares in 2 ways, for example, as 769906218249 + 27216090729 = 877443^2 + 164973^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=631317.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 481062726 + ... + 481064382.

Almost surely, 2^797122308978 is an apocalyptic number.

797122308978 is an abundant number, since it is smaller than the sum of its proper divisors (944733517083).

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

797122308978 is an equidigital number, since it uses as much as digits as its factorization.

797122308978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3576 (or 1789 counting only the distinct ones).

The product of its (nonzero) digits is 21337344, while the sum is 63.

The spelling of 797122308978 in words is "seven hundred ninety-seven billion, one hundred twenty-two million, three hundred eight thousand, nine hundred seventy-eight".