2005243642215 has 128 divisors (see below), whose sum is σ = 3973415731200. Its totient is φ = 951142677120.

The previous prime is 2005243642187. The next prime is 2005243642219. The reversal of 2005243642215 is 5122463425002.

2005243642215 is a `hidden beast` number, since 2 + 0 + 0 + 5 + 2 + 4 + 3 + 642 + 2 + 1 + 5 = 666.

It is not a de Polignac number, because 2005243642215 - 2⁶ = 2005243642151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2005243642215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005243642219) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 215173326 + ... + 215182644.

It is an arithmetic number, because the mean of its divisors is an integer number (31042310400).

Almost surely, 2^{2005243642215} is an apocalyptic number.

2005243642215 is a deficient number, since it is larger than the sum of its proper divisors (1968172088985).

2005243642215 is a wasteful number, since it uses less digits than its factorization.

2005243642215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12474 (or 12468 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The spelling of 2005243642215 in words is "two trillion, five billion, two hundred forty-three million, six hundred forty-two thousand, two hundred fifteen".