378406669507 has 2 divisors, whose sum is σ = 378406669508. Its totient is φ = 378406669506.

The previous prime is 378406669457. The next prime is 378406669559. The reversal of 378406669507 is 705966604873.

It is a weak prime.

It is an emirp because it is prime and its reverse (705966604873) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 378406669507 - 2¹⁹ = 378406145219 is a prime.

It is not a weakly prime, because it can be changed into another prime (378406669577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189203334753 + 189203334754.

It is an arithmetic number, because the mean of its divisors is an integer number (189203334754).

Almost surely, 2^378406669507 is an apocalyptic number.

378406669507 is a deficient number, since it is larger than the sum of its proper divisors (1).

378406669507 is an equidigital number, since it uses as much as digits as its factorization.

378406669507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45722880, while the sum is 61.

The spelling of 378406669507 in words is "three hundred seventy-eight billion, four hundred six million, six hundred sixty-nine thousand, five hundred seven".