20116755475437 has 8 divisors (see below), whose sum is σ = 26822361807136. Its totient is φ = 13411159730352.

The previous prime is 20116755475423. The next prime is 20116755475463. The reversal of 20116755475437 is 73457455761102.

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

It is not a de Polignac number, because 20116755475437 - 2¹⁶ = 20116755409901 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 (20116755475417) 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, 4702218 + ... + 7895844.

It is an arithmetic number, because the mean of its divisors is an integer number (3352795225892).

Almost surely, 2^{20116755475437} is an apocalyptic number.

It is an amenable number.

20116755475437 is a deficient number, since it is larger than the sum of its proper divisors (6705606331699).

20116755475437 is a wasteful number, since it uses less digits than its factorization.

20116755475437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5293307.

The product of its (nonzero) digits is 24696000, while the sum is 57.

The spelling of 20116755475437 in words is "twenty trillion, one hundred sixteen billion, seven hundred fifty-five million, four hundred seventy-five thousand, four hundred thirty-seven".