205656601513151 has 8 divisors (see below), whose sum is σ = 214603603282944. Its totient is φ = 196710050610040.

The previous prime is 205656601513117. The next prime is 205656601513163. The reversal of 205656601513151 is 151315106656502.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205656601513151 is a prime.

It is a super-3 number, since 3×205656601513151³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205656601513096 and 205656601513105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205656601515151) 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, 111784391 + ... + 113609256.

It is an arithmetic number, because the mean of its divisors is an integer number (26825450410368).

Almost surely, 2^{205656601513151} is an apocalyptic number.

205656601513151 is a deficient number, since it is larger than the sum of its proper divisors (8947001769793).

205656601513151 is a wasteful number, since it uses less digits than its factorization.

205656601513151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225433341.

The product of its (nonzero) digits is 810000, while the sum is 47.

The spelling of 205656601513151 in words is "two hundred five trillion, six hundred fifty-six billion, six hundred one million, five hundred thirteen thousand, one hundred fifty-one".