20635164361405 has 8 divisors (see below), whose sum is σ = 27013306073184. Its totient is φ = 15007392262800.

The previous prime is 20635164361403. The next prime is 20635164361459. The reversal of 20635164361405 is 50416346153602.

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

It is not a de Polignac number, because 20635164361405 - 2¹ = 20635164361403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20635164361403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187592403231 + ... + 187592403340.

It is an arithmetic number, because the mean of its divisors is an integer number (3376663259148).

Almost surely, 2^{20635164361405} is an apocalyptic number.

It is an amenable number.

20635164361405 is a deficient number, since it is larger than the sum of its proper divisors (6378141711779).

20635164361405 is a wasteful number, since it uses less digits than its factorization.

20635164361405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375184806587.

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 20635164361405 in words is "twenty trillion, six hundred thirty-five billion, one hundred sixty-four million, three hundred sixty-one thousand, four hundred five".