20313280518 has 16 divisors (see below), whose sum is σ = 43016358960. Its totient is φ = 6372793856.

The previous prime is 20313280517. The next prime is 20313280529. The reversal of 20313280518 is 81508231302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313280517) 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, 99574803 + ... + 99575006.

It is an arithmetic number, because the mean of its divisors is an integer number (2688522435).

Almost surely, 2^20313280518 is an apocalyptic number.

20313280518 is an abundant number, since it is smaller than the sum of its proper divisors (22703078442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20313280518 is a wasteful number, since it uses less digits than its factorization.

20313280518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199149831.

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 20313280518 in words is "twenty billion, three hundred thirteen million, two hundred eighty thousand, five hundred eighteen".