4020022020040 has 32 divisors (see below), whose sum is σ = 9740822588280. Its totient is φ = 1484315822592.

The previous prime is 4020022019921. The next prime is 4020022020097. The reversal of 4020022020040 is 400202200204.

It can be written as a sum of positive squares in 4 ways, for example, as 3474548192196 + 545473827844 = 1864014^2 + 738562^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4020022019996 and 4020022020023.

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, 3865405269 + ... + 3865406308.

Almost surely, 2^{4020022020040} is an apocalyptic number.

4020022020040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4020022020040 is an abundant number, since it is smaller than the sum of its proper divisors (5720800568240).

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

4020022020040 is a wasteful number, since it uses less digits than its factorization.

4020022020040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7730811601 (or 7730811597 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 4020022020040 its reverse (400202200204), we get a palindrome (4420224220244).

The spelling of 4020022020040 in words is "four trillion, twenty billion, twenty-two million, twenty thousand, forty".