20766128255084 has 12 divisors (see below), whose sum is σ = 36340817748984. Its totient is φ = 10383037469664.

The previous prime is 20766128255057. The next prime is 20766128255239. The reversal of 20766128255084 is 48055282166702.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4857302 + ... + 8070045.

It is an arithmetic number, because the mean of its divisors is an integer number (3028401479082).

Almost surely, 2^{20766128255084} is an apocalyptic number.

It is an amenable number.

20766128255084 is a deficient number, since it is larger than the sum of its proper divisors (15574689493900).

20766128255084 is a wasteful number, since it uses less digits than its factorization.

20766128255084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13328944 (or 13328942 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 56.

The spelling of 20766128255084 in words is "twenty trillion, seven hundred sixty-six billion, one hundred twenty-eight million, two hundred fifty-five thousand, eighty-four".