20686447248028 has 48 divisors (see below), whose sum is σ = 36365889611520. Its totient is φ = 10296332509824.

The previous prime is 20686447248001. The next prime is 20686447248197. The reversal of 20686447248028 is 82084274468602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1362107851 + ... + 1362123037.

It is an arithmetic number, because the mean of its divisors is an integer number (757622700240).

Almost surely, 2^{20686447248028} is an apocalyptic number.

It is an amenable number.

20686447248028 is a deficient number, since it is larger than the sum of its proper divisors (15679442363492).

20686447248028 is a wasteful number, since it uses less digits than its factorization.

20686447248028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17386 (or 17384 counting only the distinct ones).

The product of its (nonzero) digits is 66060288, while the sum is 61.

The spelling of 20686447248028 in words is "twenty trillion, six hundred eighty-six billion, four hundred forty-seven million, two hundred forty-eight thousand, twenty-eight".