206153442525215 has 8 divisors (see below), whose sum is σ = 248473928965680. Its totient is φ = 164196222063232.

The previous prime is 206153442525181. The next prime is 206153442525229. The reversal of 206153442525215 is 512525244351602.

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 206153442525215 - 2³⁸ = 205878564618271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 206153442525215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90816493370 + ... + 90816495639.

It is an arithmetic number, because the mean of its divisors is an integer number (31059241120710).

Almost surely, 2^{206153442525215} is an apocalyptic number.

206153442525215 is a deficient number, since it is larger than the sum of its proper divisors (42320486440465).

206153442525215 is a wasteful number, since it uses less digits than its factorization.

206153442525215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181632989241.

The product of its (nonzero) digits is 2880000, while the sum is 47.

Adding to 206153442525215 its reverse (512525244351602), we get a palindrome (718678686876817).

The spelling of 206153442525215 in words is "two hundred six trillion, one hundred fifty-three billion, four hundred forty-two million, five hundred twenty-five thousand, two hundred fifteen".