8216157812 has 12 divisors (see below), whose sum is σ = 14491491840. Its totient is φ = 4075731576.

The previous prime is 8216157769. The next prime is 8216157827. The reversal of 8216157812 is 2187516128.

It is a self number, because there is not a number n which added to its sum of digits gives 8216157812.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8086262 + ... + 8087277.

It is an arithmetic number, because the mean of its divisors is an integer number (1207624320).

Almost surely, 2^8216157812 is an apocalyptic number.

It is an amenable number.

8216157812 is a deficient number, since it is larger than the sum of its proper divisors (6275334028).

8216157812 is a wasteful number, since it uses less digits than its factorization.

8216157812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16173670 (or 16173668 counting only the distinct ones).

The product of its digits is 53760, while the sum is 41.

The square root of 8216157812 is about 90643.0240669407. The cubic root of 8216157812 is about 2017.8533065089.

The spelling of 8216157812 in words is "eight billion, two hundred sixteen million, one hundred fifty-seven thousand, eight hundred twelve".