2006217253591 has 8 divisors (see below), whose sum is σ = 2124267752880. Its totient is φ = 1888170945408.

The previous prime is 2006217253529. The next prime is 2006217253597. The reversal of 2006217253591 is 1953527126002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2006217253591 - 2¹⁵ = 2006217220823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2006217253597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34221 + ... + 2003398.

It is an arithmetic number, because the mean of its divisors is an integer number (265533469110).

Almost surely, 2^{2006217253591} is an apocalyptic number.

2006217253591 is a deficient number, since it is larger than the sum of its proper divisors (118050499289).

2006217253591 is a wasteful number, since it uses less digits than its factorization.

2006217253591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2095553.

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 2006217253591 in words is "two trillion, six billion, two hundred seventeen million, two hundred fifty-three thousand, five hundred ninety-one".