205114317136420 has 24 divisors (see below), whose sum is σ = 449467894943424. Its totient is φ = 78478521338976.

The previous prime is 205114317136387. The next prime is 205114317136429. The reversal of 205114317136420 is 24631713411502.

It is not an unprimeable number, because it can be changed into a prime (205114317136429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222950344254 + ... + 222950345173.

It is an arithmetic number, because the mean of its divisors is an integer number (18727828955976).

Almost surely, 2^{205114317136420} is an apocalyptic number.

205114317136420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205114317136420 is an abundant number, since it is smaller than the sum of its proper divisors (244353577807004).

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

205114317136420 is a wasteful number, since it uses less digits than its factorization.

205114317136420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445900689459 (or 445900689457 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 205114317136420 in words is "two hundred five trillion, one hundred fourteen billion, three hundred seventeen million, one hundred thirty-six thousand, four hundred twenty".