20637537011423 has 16 divisors (see below), whose sum is σ = 21512974831104. Its totient is φ = 19778855231520.

The previous prime is 20637537011363. The next prime is 20637537011437. The reversal of 20637537011423 is 32411073573602.

It is a cyclic number.

It is not a de Polignac number, because 20637537011423 - 2¹⁴ = 20637536995039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20637537016423) 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 15 ways as a sum of consecutive naturals, for example, 41576486 + ... + 42069932.

It is an arithmetic number, because the mean of its divisors is an integer number (1344560926944).

Almost surely, 2^{20637537011423} is an apocalyptic number.

20637537011423 is a deficient number, since it is larger than the sum of its proper divisors (875437819681).

20637537011423 is a wasteful number, since it uses less digits than its factorization.

20637537011423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510422.

The product of its (nonzero) digits is 635040, while the sum is 44.

The spelling of 20637537011423 in words is "twenty trillion, six hundred thirty-seven billion, five hundred thirty-seven million, eleven thousand, four hundred twenty-three".