378855064699 has 2 divisors, whose sum is σ = 378855064700. Its totient is φ = 378855064698.

The previous prime is 378855064681. The next prime is 378855064723. The reversal of 378855064699 is 996460558873.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 378855064699 - 2²⁹ = 378318193787 is a prime.

It is not a weakly prime, because it can be changed into another prime (378855064619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189427532349 + 189427532350.

It is an arithmetic number, because the mean of its divisors is an integer number (189427532350).

Almost surely, 2^378855064699 is an apocalyptic number.

378855064699 is a deficient number, since it is larger than the sum of its proper divisors (1).

378855064699 is an equidigital number, since it uses as much as digits as its factorization.

378855064699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 391910400, while the sum is 70.

The spelling of 378855064699 in words is "three hundred seventy-eight billion, eight hundred fifty-five million, sixty-four thousand, six hundred ninety-nine".