20066031728457 has 24 divisors (see below), whose sum is σ = 31604809530528. Its totient is φ = 11225752012800.

The previous prime is 20066031728447. The next prime is 20066031728459. The reversal of 20066031728457 is 75482713066002.

It is a happy number.

It is not a de Polignac number, because 20066031728457 - 2¹⁰ = 20066031727433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20066031728459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1798993144 + ... + 1799004297.

It is an arithmetic number, because the mean of its divisors is an integer number (1316867063772).

Almost surely, 2^{20066031728457} is an apocalyptic number.

It is an amenable number.

20066031728457 is a deficient number, since it is larger than the sum of its proper divisors (11538777802071).

20066031728457 is a wasteful number, since it uses less digits than its factorization.

20066031728457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3597997481 (or 3597997468 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 51.

The spelling of 20066031728457 in words is "twenty trillion, sixty-six billion, thirty-one million, seven hundred twenty-eight thousand, four hundred fifty-seven".