20713125218 has 16 divisors (see below), whose sum is σ = 31577558400. Its totient is φ = 10187923200.

The previous prime is 20713125217. The next prime is 20713125229. The reversal of 20713125218 is 81252131702.

It is not an unprimeable number, because it can be changed into a prime (20713125217) 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, 98678 + ... + 226193.

It is an arithmetic number, because the mean of its divisors is an integer number (1973597400).

Almost surely, 2^20713125218 is an apocalyptic number.

20713125218 is a deficient number, since it is larger than the sum of its proper divisors (10864433182).

20713125218 is a wasteful number, since it uses less digits than its factorization.

20713125218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325393.

The product of its (nonzero) digits is 6720, while the sum is 32.

The spelling of 20713125218 in words is "twenty billion, seven hundred thirteen million, one hundred twenty-five thousand, two hundred eighteen".