997875973828 has 48 divisors (see below), whose sum is σ = 1792585517184. Its totient is φ = 485785117440.

The previous prime is 997875973823. The next prime is 997875973847. The reversal of 997875973828 is 828379578799.

997875973828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (997875973823) 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, 72900001 + ... + 72913687.

It is an arithmetic number, because the mean of its divisors is an integer number (37345531608).

Almost surely, 2^997875973828 is an apocalyptic number.

It is an amenable number.

997875973828 is a deficient number, since it is larger than the sum of its proper divisors (794709543356).

997875973828 is a wasteful number, since it uses less digits than its factorization.

997875973828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15052 (or 15050 counting only the distinct ones).

The product of its digits is 3840721920, while the sum is 82.

The spelling of 997875973828 in words is "nine hundred ninety-seven billion, eight hundred seventy-five million, nine hundred seventy-three thousand, eight hundred twenty-eight".