205454242035 has 72 divisors (see below), whose sum is σ = 415022611536. Its totient is φ = 93749685120.

The previous prime is 205454242031. The next prime is 205454242121. The reversal of 205454242035 is 530242454502.

205454242035 is a `hidden beast` number, since 2 + 0 + 545 + 42 + 42 + 0 + 35 = 666.

It is not a de Polignac number, because 205454242035 - 2² = 205454242031 is a prime.

It is a super-2 number, since 2×205454242035² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (205454242031) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1120965 + ... + 1291305.

It is an arithmetic number, because the mean of its divisors is an integer number (5764202938).

Almost surely, 2^205454242035 is an apocalyptic number.

205454242035 is an abundant number, since it is smaller than the sum of its proper divisors (209568369501).

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

205454242035 is a wasteful number, since it uses less digits than its factorization.

205454242035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170913 (or 170903 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 36.

Adding to 205454242035 its reverse (530242454502), we get a palindrome (735696696537).

The spelling of 205454242035 in words is "two hundred five billion, four hundred fifty-four million, two hundred forty-two thousand, thirty-five".