206355036315440 has 40 divisors (see below), whose sum is σ = 484525711525968. Its totient is φ = 81724766854400.

The previous prime is 206355036315413. The next prime is 206355036315443. The reversal of 206355036315440 is 44513630553602.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×206355036315440² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (206355036315443) 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, 12769486742 + ... + 12769502901.

Almost surely, 2^{206355036315440} is an apocalyptic number.

206355036315440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206355036315440 is an abundant number, since it is smaller than the sum of its proper divisors (278170675210528).

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

206355036315440 is a wasteful number, since it uses less digits than its factorization.

206355036315440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25538989757 (or 25538989751 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 47.

The spelling of 206355036315440 in words is "two hundred six trillion, three hundred fifty-five billion, thirty-six million, three hundred fifteen thousand, four hundred forty".