20013515636401 has 8 divisors (see below), whose sum is σ = 23213971229120. Its totient is φ = 16898405526288.

The previous prime is 20013515636293. The next prime is 20013515636417. The reversal of 20013515636401 is 10463651531002.

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 20013515636401 - 2³⁷ = 19876076682929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20013515636431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21336370146 + ... + 21336371083.

It is an arithmetic number, because the mean of its divisors is an integer number (2901746403640).

Almost surely, 2^{20013515636401} is an apocalyptic number.

It is an amenable number.

20013515636401 is a deficient number, since it is larger than the sum of its proper divisors (3200455592719).

20013515636401 is an equidigital number, since it uses as much as digits as its factorization.

20013515636401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42672741303.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 20013515636401 in words is "twenty trillion, thirteen billion, five hundred fifteen million, six hundred thirty-six thousand, four hundred one".