656216023215 has 32 divisors (see below), whose sum is σ = 1079405023680. Its totient is φ = 340181074944.

The previous prime is 656216023213. The next prime is 656216023223. The reversal of 656216023215 is 512320612656.

It is not a de Polignac number, because 656216023215 - 2¹ = 656216023213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656216023213) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 39630 + ... + 1146299.

It is an arithmetic number, because the mean of its divisors is an integer number (33731406990).

Almost surely, 2^656216023215 is an apocalyptic number.

656216023215 is a deficient number, since it is larger than the sum of its proper divisors (423189000465).

656216023215 is a wasteful number, since it uses less digits than its factorization.

656216023215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186971.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 656216023215 in words is "six hundred fifty-six billion, two hundred sixteen million, twenty-three thousand, two hundred fifteen".