266156718509668 has 24 divisors (see below), whose sum is σ = 532317033819200. Its totient is φ = 114066394332768.

The previous prime is 266156718509659. The next prime is 266156718509687. The reversal of 266156718509668 is 866905817651662.

It is a junction number, because it is equal to n+sod(n) for n = 266156718509594 and 266156718509603.

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, 27886623 + ... + 36193606.

Almost surely, 2^{266156718509668} is an apocalyptic number.

266156718509668 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

266156718509668 is an abundant number, since it is smaller than the sum of its proper divisors (266160315309532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266156718509668 is a wasteful number, since it uses less digits than its factorization.

266156718509668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64228579 (or 64228577 counting only the distinct ones).

The product of its (nonzero) digits is 1567641600, while the sum is 76.

The spelling of 266156718509668 in words is "two hundred sixty-six trillion, one hundred fifty-six billion, seven hundred eighteen million, five hundred nine thousand, six hundred sixty-eight".