20075208137645 has 8 divisors (see below), whose sum is σ = 24602808271104. Its totient is φ = 15718460839504.

The previous prime is 20075208137623. The next prime is 20075208137671. The reversal of 20075208137645 is 54673180257002.

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

It is a cyclic number.

It is not a de Polignac number, because 20075208137645 - 2³⁴ = 20058028268461 is a prime.

It is a super-3 number, since 3×20075208137645³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20075208137593 and 20075208137602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42713208569 + ... + 42713209038.

It is an arithmetic number, because the mean of its divisors is an integer number (3075351033888).

Almost surely, 2^{20075208137645} is an apocalyptic number.

It is an amenable number.

20075208137645 is a deficient number, since it is larger than the sum of its proper divisors (4527600133459).

20075208137645 is an equidigital number, since it uses as much as digits as its factorization.

20075208137645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85426417659.

The product of its (nonzero) digits is 2822400, while the sum is 50.

The spelling of 20075208137645 in words is "twenty trillion, seventy-five billion, two hundred eight million, one hundred thirty-seven thousand, six hundred forty-five".