205253456612061 has 32 divisors (see below), whose sum is σ = 322530150031488. Its totient is φ = 114464877891840.

The previous prime is 205253456612047. The next prime is 205253456612089. The reversal of 205253456612061 is 160216654352502.

It is not a de Polignac number, because 205253456612061 - 2¹⁵ = 205253456579293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 205253456612061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205253456612021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 754511146 + ... + 754783131.

It is an arithmetic number, because the mean of its divisors is an integer number (10079067188484).

Almost surely, 2^{205253456612061} is an apocalyptic number.

It is an amenable number.

205253456612061 is a deficient number, since it is larger than the sum of its proper divisors (117276693419427).

205253456612061 is a wasteful number, since it uses less digits than its factorization.

205253456612061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509294621.

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 205253456612061 in words is "two hundred five trillion, two hundred fifty-three billion, four hundred fifty-six million, six hundred twelve thousand, sixty-one".