215334074136 has 128 divisors (see below), whose sum is σ = 562757990400. Its totient is φ = 68584320000.

The previous prime is 215334074119. The next prime is 215334074141. The reversal of 215334074136 is 631470433512.

It is a junction number, because it is equal to n+sod(n) for n = 215334074094 and 215334074103.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 28475796 + ... + 28483356.

It is an arithmetic number, because the mean of its divisors is an integer number (4396546800).

Almost surely, 2^215334074136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215334074136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281378995200).

215334074136 is an abundant number, since it is smaller than the sum of its proper divisors (347423916264).

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

215334074136 is a wasteful number, since it uses less digits than its factorization.

215334074136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8081 (or 8077 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 39.

The spelling of 215334074136 in words is "two hundred fifteen billion, three hundred thirty-four million, seventy-four thousand, one hundred thirty-six".