20116755475345 has 8 divisors (see below), whose sum is σ = 24535846022760. Its totient is φ = 15829578078720.

The previous prime is 20116755475343. The next prime is 20116755475351. The reversal of 20116755475345 is 54357455761102.

It can be written as a sum of positive squares in 4 ways, for example, as 24549875856 + 20092205599489 = 156684^2 + 4482433^2 .

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

It is not a de Polignac number, because 20116755475345 - 2¹ = 20116755475343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20116755475343) 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 7 ways as a sum of consecutive naturals, for example, 32978287360 + ... + 32978287969.

It is an arithmetic number, because the mean of its divisors is an integer number (3066980752845).

Almost surely, 2^{20116755475345} is an apocalyptic number.

It is an amenable number.

20116755475345 is a deficient number, since it is larger than the sum of its proper divisors (4419090547415).

20116755475345 is an equidigital number, since it uses as much as digits as its factorization.

20116755475345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65956575395.

The product of its (nonzero) digits is 17640000, while the sum is 55.

The spelling of 20116755475345 in words is "twenty trillion, one hundred sixteen billion, seven hundred fifty-five million, four hundred seventy-five thousand, three hundred forty-five".