4021031885920 has 192 divisors, whose sum is σ = 11112187806720. Its totient is φ = 1346224416768.

The previous prime is 4021031885881. The next prime is 4021031885921. The reversal of 4021031885920 is 295881301204.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021031885921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 236119966 + ... + 236136994.

It is an arithmetic number, because the mean of its divisors is an integer number (57875978160).

Almost surely, 2^{4021031885920} is an apocalyptic number.

4021031885920 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 4021031885920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5556093903360).

4021031885920 is an abundant number, since it is smaller than the sum of its proper divisors (7091155920800).

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

4021031885920 is a wasteful number, since it uses less digits than its factorization.

4021031885920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21997 (or 21989 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 4021031885920 in words is "four trillion, twenty-one billion, thirty-one million, eight hundred eighty-five thousand, nine hundred twenty".