378813533407 has 2 divisors, whose sum is σ = 378813533408. Its totient is φ = 378813533406.

The previous prime is 378813533383. The next prime is 378813533419. The reversal of 378813533407 is 704335318873.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378813533407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378813533807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189406766703 + 189406766704.

It is an arithmetic number, because the mean of its divisors is an integer number (189406766704).

Almost surely, 2^378813533407 is an apocalyptic number.

378813533407 is a deficient number, since it is larger than the sum of its proper divisors (1).

378813533407 is an equidigital number, since it uses as much as digits as its factorization.

378813533407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5080320, while the sum is 52.

The spelling of 378813533407 in words is "three hundred seventy-eight billion, eight hundred thirteen million, five hundred thirty-three thousand, four hundred seven".