206197123826 has 16 divisors (see below), whose sum is σ = 329989476960. Its totient is φ = 96293221440.

The previous prime is 206197123817. The next prime is 206197123831. The reversal of 206197123826 is 628321791602.

It is a super-2 number, since 2×206197123826² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23142956 + ... + 23151863.

It is an arithmetic number, because the mean of its divisors is an integer number (20624342310).

Almost surely, 2^206197123826 is an apocalyptic number.

206197123826 is a deficient number, since it is larger than the sum of its proper divisors (123792353134).

206197123826 is a wasteful number, since it uses less digits than its factorization.

206197123826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46294969.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 206197123826 in words is "two hundred six billion, one hundred ninety-seven million, one hundred twenty-three thousand, eight hundred twenty-six".