40000200020 has 24 divisors (see below), whose sum is σ = 91636822368. Its totient is φ = 14545527200.

The previous prime is 40000200011. The next prime is 40000200061. The reversal of 40000200020 is 2000200004.

40000200020 is a modest number, since divided by 200020 gives 400 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 40000199980 and 40000200007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90909326 + ... + 90909765.

It is an arithmetic number, because the mean of its divisors is an integer number (3818200932).

Almost surely, 2^40000200020 is an apocalyptic number.

It is an amenable number.

40000200020 is an abundant number, since it is smaller than the sum of its proper divisors (51636622348).

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

40000200020 is a wasteful number, since it uses less digits than its factorization.

40000200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181819111 (or 181819109 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

Subtracting from 40000200020 its product of nonzero digits (16), we obtain a palindrome (40000200004).

Adding to 40000200020 its reverse (2000200004), we get a palindrome (42000400024).

The spelling of 40000200020 in words is "forty billion, two hundred thousand, twenty".