813896612052 has 12 divisors (see below), whose sum is σ = 1899092094816. Its totient is φ = 271298870680.

The previous prime is 813896612021. The next prime is 813896612069. The reversal of 813896612052 is 250216698318.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 813896611986 and 813896612004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33912358824 + ... + 33912358847.

It is an arithmetic number, because the mean of its divisors is an integer number (158257674568).

Almost surely, 2^813896612052 is an apocalyptic number.

It is an amenable number.

813896612052 is an abundant number, since it is smaller than the sum of its proper divisors (1085195482764).

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

813896612052 is a wasteful number, since it uses less digits than its factorization.

813896612052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67824717678 (or 67824717676 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 813896612052 in words is "eight hundred thirteen billion, eight hundred ninety-six million, six hundred twelve thousand, fifty-two".