815193023448 has 16 divisors (see below), whose sum is σ = 2037982558680. Its totient is φ = 271731007808.

The previous prime is 815193023443. The next prime is 815193023467. The reversal of 815193023448 is 844320391518.

It is a junction number, because it is equal to n+sod(n) for n = 815193023397 and 815193023406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815193023441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16983187965 + ... + 16983188012.

Almost surely, 2^815193023448 is an apocalyptic number.

It is an amenable number.

815193023448 is an abundant number, since it is smaller than the sum of its proper divisors (1222789535232).

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

815193023448 is a wasteful number, since it uses less digits than its factorization.

815193023448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33966375986 (or 33966375982 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 815193023448 in words is "eight hundred fifteen billion, one hundred ninety-three million, twenty-three thousand, four hundred forty-eight".