205655182586140 has 96 divisors (see below), whose sum is σ = 509509369958400. Its totient is φ = 68233779855360.

The previous prime is 205655182586093. The next prime is 205655182586141. The reversal of 205655182586140 is 41685281556502.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205655182586141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147992476 + ... + 149375644.

It is an arithmetic number, because the mean of its divisors is an integer number (5307389270400).

Almost surely, 2^{205655182586140} is an apocalyptic number.

205655182586140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205655182586140 is an abundant number, since it is smaller than the sum of its proper divisors (303854187372260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205655182586140 is a wasteful number, since it uses less digits than its factorization.

205655182586140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417475 (or 1417473 counting only the distinct ones).

The product of its (nonzero) digits is 23040000, while the sum is 58.

The spelling of 205655182586140 in words is "two hundred five trillion, six hundred fifty-five billion, one hundred eighty-two million, five hundred eighty-six thousand, one hundred forty".