20116755475637 has 4 divisors (see below), whose sum is σ = 20991397018080. Its totient is φ = 19242113933196.

The previous prime is 20116755475549. The next prime is 20116755475673. The reversal of 20116755475637 is 73657455761102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20116755475637 - 2¹⁴ = 20116755459253 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 (20110755475637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 437320771187 + ... + 437320771232.

It is an arithmetic number, because the mean of its divisors is an integer number (5247849254520).

Almost surely, 2^{20116755475637} is an apocalyptic number.

It is an amenable number.

20116755475637 is a deficient number, since it is larger than the sum of its proper divisors (874641542443).

20116755475637 is an equidigital number, since it uses as much as digits as its factorization.

20116755475637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874641542442.

The product of its (nonzero) digits is 37044000, while the sum is 59.

The spelling of 20116755475637 in words is "twenty trillion, one hundred sixteen billion, seven hundred fifty-five million, four hundred seventy-five thousand, six hundred thirty-seven".