215065103656 has 16 divisors (see below), whose sum is σ = 434266074900. Its totient is φ = 99260817024.

The previous prime is 215065103621. The next prime is 215065103683. The reversal of 215065103656 is 656301560512.

215065103656 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 168127881156 + 46937222500 = 410034^2 + 216650^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1033966741 + ... + 1033966948.

Almost surely, 2^215065103656 is an apocalyptic number.

215065103656 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

215065103656 is an abundant number, since it is smaller than the sum of its proper divisors (219200971244).

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

215065103656 is a wasteful number, since it uses less digits than its factorization.

215065103656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2067933708 (or 2067933704 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 215065103656 in words is "two hundred fifteen billion, sixty-five million, one hundred three thousand, six hundred fifty-six".