39378843504047 has 2 divisors, whose sum is σ = 39378843504048. Its totient is φ = 39378843504046.

The previous prime is 39378843503999. The next prime is 39378843504113. The reversal of 39378843504047 is 74040534887393.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39378843504047 - 2⁶ = 39378843503983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39378843500047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19689421752023 + 19689421752024.

It is an arithmetic number, because the mean of its divisors is an integer number (19689421752024).

Almost surely, 2^{39378843504047} is an apocalyptic number.

39378843504047 is a deficient number, since it is larger than the sum of its proper divisors (1).

39378843504047 is an equidigital number, since it uses as much as digits as its factorization.

39378843504047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243855360, while the sum is 65.

The spelling of 39378843504047 in words is "thirty-nine trillion, three hundred seventy-eight billion, eight hundred forty-three million, five hundred four thousand, forty-seven".