215415200001 has 16 divisors (see below), whose sum is σ = 304199777664. Its totient is φ = 135125055744.

The previous prime is 215415199973. The next prime is 215415200017. The reversal of 215415200001 is 100002514512.

It is not a de Polignac number, because 215415200001 - 2¹¹ = 215415197953 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (215415200401) 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, 398146 + ... + 767691.

It is an arithmetic number, because the mean of its divisors is an integer number (19012486104).

Almost surely, 2^215415200001 is an apocalyptic number.

It is an amenable number.

215415200001 is a deficient number, since it is larger than the sum of its proper divisors (88784577663).

215415200001 is a wasteful number, since it uses less digits than its factorization.

215415200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169480.

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 215415200001 its reverse (100002514512), we get a palindrome (315417714513).

It can be divided in two parts, 215415 and 200001, that added together give a triangular number (415416 = T₉₁₁).

The spelling of 215415200001 in words is "two hundred fifteen billion, four hundred fifteen million, two hundred thousand, one".