813005212705 has 32 divisors (see below), whose sum is σ = 1117745971200. Its totient is φ = 556106530752.

The previous prime is 813005212639. The next prime is 813005212711. The reversal of 813005212705 is 507212500318.

It is a cyclic number.

It is not a de Polignac number, because 813005212705 - 2¹⁷ = 813005081633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50605504 + ... + 50621566.

It is an arithmetic number, because the mean of its divisors is an integer number (34929561600).

Almost surely, 2^813005212705 is an apocalyptic number.

It is an amenable number.

813005212705 is a deficient number, since it is larger than the sum of its proper divisors (304740758495).

813005212705 is a wasteful number, since it uses less digits than its factorization.

813005212705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19573.

The product of its (nonzero) digits is 16800, while the sum is 34.

The spelling of 813005212705 in words is "eight hundred thirteen billion, five million, two hundred twelve thousand, seven hundred five".