215011702128 has 80 divisors (see below), whose sum is σ = 588220271136. Its totient is φ = 67443179520.

The previous prime is 215011702121. The next prime is 215011702133. The reversal of 215011702128 is 821207110512.

It is a junction number, because it is equal to n+sod(n) for n = 215011702095 and 215011702104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215011702121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5661250 + ... + 5699102.

Almost surely, 2^215011702128 is an apocalyptic number.

It is an amenable number.

215011702128 is an abundant number, since it is smaller than the sum of its proper divisors (373208569008).

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

215011702128 is a wasteful number, since it uses less digits than its factorization.

215011702128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44842 (or 44836 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 30.

The spelling of 215011702128 in words is "two hundred fifteen billion, eleven million, seven hundred two thousand, one hundred twenty-eight".