533978382321 has 8 divisors (see below), whose sum is σ = 791079084960. Its totient is φ = 355985588196.

The previous prime is 533978382307. The next prime is 533978382323. The reversal of 533978382321 is 123283879335.

533978382321 is a `hidden beast` number, since 5 + 339 + 78 + 3 + 8 + 232 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-533978382321 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (533978382323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9888488535 + ... + 9888488588.

It is an arithmetic number, because the mean of its divisors is an integer number (98884885620).

Almost surely, 2^533978382321 is an apocalyptic number.

It is an amenable number.

533978382321 is a deficient number, since it is larger than the sum of its proper divisors (257100702639).

533978382321 is a wasteful number, since it uses less digits than its factorization.

533978382321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19776977132 (or 19776977126 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The spelling of 533978382321 in words is "five hundred thirty-three billion, nine hundred seventy-eight million, three hundred eighty-two thousand, three hundred twenty-one".