378809257627 has 2 divisors, whose sum is σ = 378809257628. Its totient is φ = 378809257626.

The previous prime is 378809257621. The next prime is 378809257643. The reversal of 378809257627 is 726752908873.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 378809257627 - 2⁷ = 378809257499 is a prime.

It is a super-2 number, since 2×378809257627² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (378809257621) 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, 189404628813 + 189404628814.

It is an arithmetic number, because the mean of its divisors is an integer number (189404628814).

Almost surely, 2^378809257627 is an apocalyptic number.

378809257627 is a deficient number, since it is larger than the sum of its proper divisors (1).

378809257627 is an equidigital number, since it uses as much as digits as its factorization.

378809257627 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71124480, while the sum is 64.

The spelling of 378809257627 in words is "three hundred seventy-eight billion, eight hundred nine million, two hundred fifty-seven thousand, six hundred twenty-seven".