813849564002 has 16 divisors (see below), whose sum is σ = 1263064492032. Its totient is φ = 392888698560.

The previous prime is 813849563977. The next prime is 813849564007. The reversal of 813849564002 is 200465948318.

It is a super-2 number, since 2×813849564002² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (813849564007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15130898 + ... + 15184589.

It is an arithmetic number, because the mean of its divisors is an integer number (78941530752).

Almost surely, 2^813849564002 is an apocalyptic number.

813849564002 is a deficient number, since it is larger than the sum of its proper divisors (449214928030).

813849564002 is a wasteful number, since it uses less digits than its factorization.

813849564002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30315953.

The product of its (nonzero) digits is 1658880, while the sum is 50.

The spelling of 813849564002 in words is "eight hundred thirteen billion, eight hundred forty-nine million, five hundred sixty-four thousand, two".