206231642536 has 32 divisors (see below), whose sum is σ = 394948080000. Its totient is φ = 100912559616.

The previous prime is 206231642509. The next prime is 206231642567. The reversal of 206231642536 is 635246132602.

It is a super-2 number, since 2×206231642536² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5900440 + ... + 5935288.

It is an arithmetic number, because the mean of its divisors is an integer number (12342127500).

Almost surely, 2^206231642536 is an apocalyptic number.

It is an amenable number.

206231642536 is a deficient number, since it is larger than the sum of its proper divisors (188716437464).

206231642536 is a wasteful number, since it uses less digits than its factorization.

206231642536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50641 (or 50637 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 206231642536 in words is "two hundred six billion, two hundred thirty-one million, six hundred forty-two thousand, five hundred thirty-six".