819822896997 has 16 divisors (see below), whose sum is σ = 1178615480448. Its totient is φ = 503891876160.

The previous prime is 819822896957. The next prime is 819822896999. The reversal of 819822896997 is 799698228918.

819822896997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 819822896997 - 2⁸ = 819822896741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (819822896999) 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, 12770113 + ... + 12834150.

It is an arithmetic number, because the mean of its divisors is an integer number (73663467528).

Almost surely, 2^819822896997 is an apocalyptic number.

It is an amenable number.

819822896997 is a deficient number, since it is larger than the sum of its proper divisors (358792583451).

819822896997 is a wasteful number, since it uses less digits than its factorization.

819822896997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25605100.

The product of its digits is 564350976, while the sum is 78.

The spelling of 819822896997 in words is "eight hundred nineteen billion, eight hundred twenty-two million, eight hundred ninety-six thousand, nine hundred ninety-seven".