8213736505856 has 80 divisors (see below), whose sum is σ = 18757092135936. Its totient is φ = 3519952920576.

The previous prime is 8213736505853. The next prime is 8213736505873. The reversal of 8213736505856 is 6585056373128.

It is a junction number, because it is equal to n+sod(n) for n = 8213736505795 and 8213736505804.

It is not an unprimeable number, because it can be changed into a prime (8213736505853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65764940 + ... + 65889716.

Almost surely, 2^{8213736505856} is an apocalyptic number.

It is an amenable number.

8213736505856 is an abundant number, since it is smaller than the sum of its proper divisors (10543355630080).

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

8213736505856 is a wasteful number, since it uses less digits than its factorization.

8213736505856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143169 (or 143153 counting only the distinct ones).

The product of its (nonzero) digits is 36288000, while the sum is 59.

The spelling of 8213736505856 in words is "eight trillion, two hundred thirteen billion, seven hundred thirty-six million, five hundred five thousand, eight hundred fifty-six".