205115355545044 has 48 divisors (see below), whose sum is σ = 422898620457600. Its totient is φ = 85232849273856.

The previous prime is 205115355545041. The next prime is 205115355545083. The reversal of 205115355545044 is 440545553511502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205115355545041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 850302949 + ... + 850544140.

It is an arithmetic number, because the mean of its divisors is an integer number (8810387926200).

Almost surely, 2^{205115355545044} is an apocalyptic number.

It is an amenable number.

205115355545044 is an abundant number, since it is smaller than the sum of its proper divisors (217783264912556).

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

205115355545044 is a wasteful number, since it uses less digits than its factorization.

205115355545044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700847232 (or 1700847230 counting only the distinct ones).

The product of its (nonzero) digits is 6000000, while the sum is 49.

The spelling of 205115355545044 in words is "two hundred five trillion, one hundred fifteen billion, three hundred fifty-five million, five hundred forty-five thousand, forty-four".