206434036641 has 8 divisors (see below), whose sum is σ = 314566151104. Its totient is φ = 117962306640.

The previous prime is 206434036637. The next prime is 206434036649. The reversal of 206434036641 is 146630434602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 206434036641 - 2² = 206434036637 is a prime.

It is a super-2 number, since 2×206434036641² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 206434036641.

It is not an unprimeable number, because it can be changed into a prime (206434036649) 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, 4915096090 + ... + 4915096131.

It is an arithmetic number, because the mean of its divisors is an integer number (39320768888).

Almost surely, 2^206434036641 is an apocalyptic number.

206434036641 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

206434036641 is a deficient number, since it is larger than the sum of its proper divisors (108132114463).

206434036641 is an equidigital number, since it uses as much as digits as its factorization.

206434036641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9830192231.

The product of its (nonzero) digits is 248832, while the sum is 39.

The spelling of 206434036641 in words is "two hundred six billion, four hundred thirty-four million, thirty-six thousand, six hundred forty-one".