20202040040 has 64 divisors (see below), whose sum is σ = 55944120960. Its totient is φ = 6393611520.

The previous prime is 20202040039. The next prime is 20202040057. The reversal of 20202040040 is 4004020202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 20202039997 and 20202040024.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2771366 + ... + 2778645.

It is an arithmetic number, because the mean of its divisors is an integer number (874126890).

Almost surely, 2^20202040040 is an apocalyptic number.

20202040040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202040040 is an abundant number, since it is smaller than the sum of its proper divisors (35742080920).

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

20202040040 is a wasteful number, since it uses less digits than its factorization.

20202040040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5550042 (or 5550038 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

Adding to 20202040040 its reverse (4004020202), we get a palindrome (24206060242).

The spelling of 20202040040 in words is "twenty billion, two hundred two million, forty thousand, forty".