20635164361404 has 144 divisors (see below), whose sum is σ = 52464222720000. Its totient is φ = 6838577591040.

The previous prime is 20635164361403. The next prime is 20635164361459. The reversal of 20635164361404 is 40416346153602.

20635164361404 is a `hidden beast` number, since 2 + 0 + 63 + 5 + 16 + 436 + 140 + 4 = 666.

It is a super-2 number, since 2×20635164361404² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20635164361404.

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 polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5877288009 + ... + 5877291519.

It is an arithmetic number, because the mean of its divisors is an integer number (364334880000).

Almost surely, 2^{20635164361404} is an apocalyptic number.

It is an amenable number.

20635164361404 is an abundant number, since it is smaller than the sum of its proper divisors (31829058358596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20635164361404 is a wasteful number, since it uses less digits than its factorization.

20635164361404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5168 (or 5163 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 20635164361404 in words is "twenty trillion, six hundred thirty-five billion, one hundred sixty-four million, three hundred sixty-one thousand, four hundred four".