206430828814813 has 4 divisors (see below), whose sum is σ = 215406082241568. Its totient is φ = 197455575388060.

The previous prime is 206430828814759. The next prime is 206430828814817. The reversal of 206430828814813 is 318418828034602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206430828814813 is a prime.

It is a super-2 number, since 2×206430828814813² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206430828814817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4487626713343 + ... + 4487626713388.

It is an arithmetic number, because the mean of its divisors is an integer number (53851520560392).

Almost surely, 2^{206430828814813} is an apocalyptic number.

206430828814813 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

206430828814813 is a deficient number, since it is larger than the sum of its proper divisors (8975253426755).

206430828814813 is an equidigital number, since it uses as much as digits as its factorization.

206430828814813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8975253426754.

The product of its (nonzero) digits is 14155776, while the sum is 58.

The spelling of 206430828814813 in words is "two hundred six trillion, four hundred thirty billion, eight hundred twenty-eight million, eight hundred fourteen thousand, eight hundred thirteen".