20003513165718 has 16 divisors (see below), whose sum is σ = 40012850700720. Its totient is φ = 6666866993696.

The previous prime is 20003513165717. The next prime is 20003513165773. The reversal of 20003513165718 is 81756131530002.

It is a self number, because there is not a number n which added to its sum of digits gives 20003513165718.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003513165717) 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, 242637405 + ... + 242719832.

It is an arithmetic number, because the mean of its divisors is an integer number (2500803168795).

Almost surely, 2^{20003513165718} is an apocalyptic number.

20003513165718 is an abundant number, since it is smaller than the sum of its proper divisors (20009337535002).

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

20003513165718 is a wasteful number, since it uses less digits than its factorization.

20003513165718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485364111.

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 20003513165718 in words is "twenty trillion, three billion, five hundred thirteen million, one hundred sixty-five thousand, seven hundred eighteen".