815936923428 has 24 divisors (see below), whose sum is σ = 2076930350880. Its totient is φ = 247253613120.

The previous prime is 815936923393. The next prime is 815936923441. The reversal of 815936923428 is 824329639518.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3090670033 + ... + 3090670296.

It is an arithmetic number, because the mean of its divisors is an integer number (86538764620).

Almost surely, 2^815936923428 is an apocalyptic number.

It is an amenable number.

815936923428 is an abundant number, since it is smaller than the sum of its proper divisors (1260993427452).

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

815936923428 is a wasteful number, since it uses less digits than its factorization.

815936923428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6181340347 (or 6181340345 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 60.

The spelling of 815936923428 in words is "eight hundred fifteen billion, nine hundred thirty-six million, nine hundred twenty-three thousand, four hundred twenty-eight".