205420041405560 has 64 divisors (see below), whose sum is σ = 482601386642400. Its totient is φ = 78593191430656.

The previous prime is 205420041405493. The next prime is 205420041405569. The reversal of 205420041405560 is 65504140024502.

It is a super-2 number, since 2×205420041405560² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205420041405569) 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, 827381687 + ... + 827629926.

Almost surely, 2^{205420041405560} is an apocalyptic number.

205420041405560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205420041405560 is an abundant number, since it is smaller than the sum of its proper divisors (277181345236840).

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

205420041405560 is a wasteful number, since it uses less digits than its factorization.

205420041405560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655011760 (or 1655011756 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 38.

The spelling of 205420041405560 in words is "two hundred five trillion, four hundred twenty billion, forty-one million, four hundred five thousand, five hundred sixty".