378813533383 has 2 divisors, whose sum is σ = 378813533384. Its totient is φ = 378813533382.

The previous prime is 378813533381. The next prime is 378813533407. The reversal of 378813533383 is 383335318873.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 378813533383 - 2¹ = 378813533381 is a prime.

It is a super-2 number, since 2×378813533383² (a number of 24 digits) contains 22 as substring.

Together with 378813533381, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378813533381) by changing a digit.

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 as a sum of consecutive naturals, namely, 189406766691 + 189406766692.

It is an arithmetic number, because the mean of its divisors is an integer number (189406766692).

Almost surely, 2^378813533383 is an apocalyptic number.

378813533383 is a deficient number, since it is larger than the sum of its proper divisors (1).

378813533383 is an equidigital number, since it uses as much as digits as its factorization.

378813533383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13063680, while the sum is 55.

The spelling of 378813533383 in words is "three hundred seventy-eight billion, eight hundred thirteen million, five hundred thirty-three thousand, three hundred eighty-three".