8136212856 has 64 divisors (see below), whose sum is σ = 21555223200. Its totient is φ = 2554675200.

The previous prime is 8136212839. The next prime is 8136212857. The reversal of 8136212856 is 6582126318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8136212857) 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 15 ways as a sum of consecutive naturals, for example, 114025 + ... + 171096.

Almost surely, 2^8136212856 is an apocalyptic number.

It is an amenable number.

8136212856 is an abundant number, since it is smaller than the sum of its proper divisors (13419010344).

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

8136212856 is a wasteful number, since it uses less digits than its factorization.

8136212856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285200 (or 285196 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 8136212856 is about 90200.9581767289. The cubic root of 8136212856 is about 2011.2872504867.

The spelling of 8136212856 in words is "eight billion, one hundred thirty-six million, two hundred twelve thousand, eight hundred fifty-six".