20145754545 has 32 divisors (see below), whose sum is σ = 39004892928. Its totient is φ = 8667752448.

The previous prime is 20145754471. The next prime is 20145754567. The reversal of 20145754545 is 54545754102.

It is not a de Polignac number, because 20145754545 - 2⁹ = 20145754033 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20145754497 and 20145754506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5641284 + ... + 5644853.

It is an arithmetic number, because the mean of its divisors is an integer number (1218902904).

Almost surely, 2^20145754545 is an apocalyptic number.

It is an amenable number.

20145754545 is a deficient number, since it is larger than the sum of its proper divisors (18859138383).

20145754545 is a wasteful number, since it uses less digits than its factorization.

20145754545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11286169.

The product of its (nonzero) digits is 560000, while the sum is 42.

The spelling of 20145754545 in words is "twenty billion, one hundred forty-five million, seven hundred fifty-four thousand, five hundred forty-five".