20771730720401 has 8 divisors (see below), whose sum is σ = 20776813953504. Its totient is φ = 20766647905920.

The previous prime is 20771730720397. The next prime is 20771730720569. The reversal of 20771730720401 is 10402703717702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20771730720401 - 2² = 20771730720397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20771730720101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114032486 + ... + 114214496.

It is an arithmetic number, because the mean of its divisors is an integer number (2597101744188).

Almost surely, 2^{20771730720401} is an apocalyptic number.

It is an amenable number.

20771730720401 is a deficient number, since it is larger than the sum of its proper divisors (5083233103).

20771730720401 is a wasteful number, since it uses less digits than its factorization.

20771730720401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209311.

The product of its (nonzero) digits is 115248, while the sum is 41.

The spelling of 20771730720401 in words is "twenty trillion, seven hundred seventy-one billion, seven hundred thirty million, seven hundred twenty thousand, four hundred one".