383921428851 has 48 divisors (see below), whose sum is σ = 597626664960. Its totient is φ = 236804705280.

The previous prime is 383921428823. The next prime is 383921428861. The reversal of 383921428851 is 158824129383.

383921428851 is a `hidden beast` number, since 3 + 83 + 92 + 1 + 428 + 8 + 51 = 666.

It is not a de Polignac number, because 383921428851 - 2¹¹ = 383921426803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (383921428861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13968915 + ... + 13996371.

It is an arithmetic number, because the mean of its divisors is an integer number (12450555520).

Almost surely, 2^383921428851 is an apocalyptic number.

383921428851 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

383921428851 is a deficient number, since it is larger than the sum of its proper divisors (213705236109).

383921428851 is a wasteful number, since it uses less digits than its factorization.

383921428851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29696 (or 29693 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The spelling of 383921428851 in words is "three hundred eighty-three billion, nine hundred twenty-one million, four hundred twenty-eight thousand, eight hundred fifty-one".