20174561045 has 8 divisors (see below), whose sum is σ = 25633560024. Its totient is φ = 15190257664.

The previous prime is 20174561041. The next prime is 20174561081. The reversal of 20174561045 is 54016547102.

It can be written as a sum of positive squares in 4 ways, for example, as 257730916 + 19916830129 = 16054^2 + 141127^2 .

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 20174561045 - 2² = 20174561041 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20174560996 and 20174561014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20174561041) 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, 118673804 + ... + 118673973.

It is an arithmetic number, because the mean of its divisors is an integer number (3204195003).

Almost surely, 2^20174561045 is an apocalyptic number.

It is an amenable number.

20174561045 is a deficient number, since it is larger than the sum of its proper divisors (5458998979).

20174561045 is a wasteful number, since it uses less digits than its factorization.

20174561045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237347799.

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 20174561045 in words is "twenty billion, one hundred seventy-four million, five hundred sixty-one thousand, forty-five".