206400265051220 has 48 divisors (see below), whose sum is σ = 438666326360640. Its totient is φ = 81564737607936.

The previous prime is 206400265051199. The next prime is 206400265051231. The reversal of 206400265051220 is 22150562004602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234898019 + ... + 235775061.

It is an arithmetic number, because the mean of its divisors is an integer number (9138881799180).

Almost surely, 2^{206400265051220} is an apocalyptic number.

206400265051220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206400265051220 is an abundant number, since it is smaller than the sum of its proper divisors (232266061309420).

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

206400265051220 is a wasteful number, since it uses less digits than its factorization.

206400265051220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018904 (or 1018902 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 206400265051220 in words is "two hundred six trillion, four hundred billion, two hundred sixty-five million, fifty-one thousand, two hundred twenty".