383872017021 has 16 divisors (see below), whose sum is σ = 528409067520. Its totient is φ = 247626981360.

The previous prime is 383872016999. The next prime is 383872017041. The reversal of 383872017021 is 120710278383.

It is not a de Polignac number, because 383872017021 - 2¹³ = 383872008829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383872017041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 455596 + ... + 987578.

It is an arithmetic number, because the mean of its divisors is an integer number (33025566720).

Almost surely, 2^383872017021 is an apocalyptic number.

383872017021 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

383872017021 is a deficient number, since it is larger than the sum of its proper divisors (144537050499).

383872017021 is a wasteful number, since it uses less digits than its factorization.

383872017021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539776.

The product of its (nonzero) digits is 112896, while the sum is 42.

The spelling of 383872017021 in words is "three hundred eighty-three billion, eight hundred seventy-two million, seventeen thousand, twenty-one".