20045278018 has 8 divisors (see below), whose sum is σ = 30516692112. Its totient is φ = 9873047316.

The previous prime is 20045278013. The next prime is 20045278037. The reversal of 20045278018 is 81087254002.

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

It is not an unprimeable number, because it can be changed into a prime (20045278013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74795680 + ... + 74795947.

It is an arithmetic number, because the mean of its divisors is an integer number (3814586514).

Almost surely, 2^20045278018 is an apocalyptic number.

20045278018 is a deficient number, since it is larger than the sum of its proper divisors (10471414094).

20045278018 is a wasteful number, since it uses less digits than its factorization.

20045278018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149591696.

The product of its (nonzero) digits is 35840, while the sum is 37.

The spelling of 20045278018 in words is "twenty billion, forty-five million, two hundred seventy-eight thousand, eighteen".