206261112536643 has 32 divisors (see below), whose sum is σ = 278441715768832. Its totient is φ = 135805393152000.

The previous prime is 206261112536639. The next prime is 206261112536653. The reversal of 206261112536643 is 346635211162602.

It is not a de Polignac number, because 206261112536643 - 2² = 206261112536639 is a prime.

It is the 14361794-th Hogben number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206261112536592 and 206261112536601.

It is not an unprimeable number, because it can be changed into a prime (206261112536603) by changing a digit.

It is a nontrivial repunit in base 14361793.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 141521973 + ... + 142971993.

It is an arithmetic number, because the mean of its divisors is an integer number (8701303617776).

Almost surely, 2^{206261112536643} is an apocalyptic number.

206261112536643 is a deficient number, since it is larger than the sum of its proper divisors (72180603232189).

206261112536643 is a wasteful number, since it uses less digits than its factorization.

206261112536643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451995.

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 206261112536643 in words is "two hundred six trillion, two hundred sixty-one billion, one hundred twelve million, five hundred thirty-six thousand, six hundred forty-three".