20000218402 has 16 divisors (see below), whose sum is σ = 30082896000. Its totient is φ = 9972617328.

The previous prime is 20000218393. The next prime is 20000218409. The reversal of 20000218402 is 20481200002.

20000218402 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×20000218402² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20000218402.

It is not an unprimeable number, because it can be changed into a prime (20000218409) 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, 1477288 + ... + 1490764.

It is an arithmetic number, because the mean of its divisors is an integer number (1880181000).

Almost surely, 2^20000218402 is an apocalyptic number.

20000218402 is a deficient number, since it is larger than the sum of its proper divisors (10082677598).

20000218402 is a wasteful number, since it uses less digits than its factorization.

20000218402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15465.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20000218402 its reverse (20481200002), we get a palindrome (40481418404).

The spelling of 20000218402 in words is "twenty billion, two hundred eighteen thousand, four hundred two".