797978994219 has 24 divisors (see below), whose sum is σ = 1260983601072. Its totient is φ = 482253573120.

The previous prime is 797978994179. The next prime is 797978994301. The reversal of 797978994219 is 912499879797.

It is a happy number.

It is not a de Polignac number, because 797978994219 - 2¹¹ = 797978992171 is a prime.

It is a super-2 number, since 2×797978994219² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (797978994719) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 11382042 + ... + 11451935.

It is an arithmetic number, because the mean of its divisors is an integer number (52540983378).

Almost surely, 2^797978994219 is an apocalyptic number.

797978994219 is a deficient number, since it is larger than the sum of its proper divisors (463004606853).

797978994219 is a wasteful number, since it uses less digits than its factorization.

797978994219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22834347 (or 22834344 counting only the distinct ones).

The product of its digits is 1296243648, while the sum is 81.

The spelling of 797978994219 in words is "seven hundred ninety-seven billion, nine hundred seventy-eight million, nine hundred ninety-four thousand, two hundred nineteen".