813019021350 has 48 divisors (see below), whose sum is σ = 2059186917888. Its totient is φ = 212192196640.

The previous prime is 813019021337. The next prime is 813019021361. The reversal of 813019021350 is 53120910318.

813019021350 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57653874 + ... + 57667973.

It is an arithmetic number, because the mean of its divisors is an integer number (42899727456).

Almost surely, 2^813019021350 is an apocalyptic number.

813019021350 is an abundant number, since it is smaller than the sum of its proper divisors (1246167896538).

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

813019021350 is a wasteful number, since it uses less digits than its factorization.

813019021350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115321909 (or 115321904 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

Adding to 813019021350 its reverse (53120910318), we get a palindrome (866139931668).

The spelling of 813019021350 in words is "eight hundred thirteen billion, nineteen million, twenty-one thousand, three hundred fifty".