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4000020000000 = 28357163409

4000020000000 has 576 divisors, whose sum is σ = 13421700015360. Its totient is φ = 1057536000000.

The previous prime is 4000019999981. The next prime is 4000020000019. The reversal of 4000020000000 is 200004.

Adding to 4000020000000 its reverse (200004), we get a palindrome (4000020200004).

It is an interprime number because it is at equal distance from previous prime (4000019999981) and next prime (4000020000019).

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9779999796 + ... + 9780000204.

Almost surely, 24000020000000 is an apocalyptic number.

4000020000000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4000020000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6710850007680).

4000020000000 is an abundant number, since it is smaller than the sum of its proper divisors (9421680015360).

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

4000020000000 is an frugal number, since it uses more digits than its factorization.

4000020000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 6.

The spelling of 4000020000000 in words is "four trillion, twenty million", and thus it is an aban number.