805136324892 has 192 divisors, whose sum is σ = 2004488640000. Its totient is φ = 251133281280.

The previous prime is 805136324857. The next prime is 805136324959. The reversal of 805136324892 is 298423631508.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 512498467 + ... + 512500037.

It is an arithmetic number, because the mean of its divisors is an integer number (10440045000).

Almost surely, 2^805136324892 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 805136324892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1002244320000).

805136324892 is an abundant number, since it is smaller than the sum of its proper divisors (1199352315108).

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

805136324892 is a wasteful number, since it uses less digits than its factorization.

805136324892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004 (or 2002 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 51.

The spelling of 805136324892 in words is "eight hundred five billion, one hundred thirty-six million, three hundred twenty-four thousand, eight hundred ninety-two".