204860868626 has 4 divisors (see below), whose sum is σ = 307291302942. Its totient is φ = 102430434312.

The previous prime is 204860868623. The next prime is 204860868631. The reversal of 204860868626 is 626868068402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 132642368401 + 72218500225 = 364201^2 + 268735^2 .

It is a super-2 number, since 2×204860868626² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204860868623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51215217155 + ... + 51215217158.

Almost surely, 2^204860868626 is an apocalyptic number.

204860868626 is a deficient number, since it is larger than the sum of its proper divisors (102430434316).

204860868626 is a wasteful number, since it uses less digits than its factorization.

204860868626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102430434315.

The product of its (nonzero) digits is 10616832, while the sum is 56.

The spelling of 204860868626 in words is "two hundred four billion, eight hundred sixty million, eight hundred sixty-eight thousand, six hundred twenty-six".