38678403566807 has 2 divisors, whose sum is σ = 38678403566808. Its totient is φ = 38678403566806.

The previous prime is 38678403566723. The next prime is 38678403566813. The reversal of 38678403566807 is 70866530487683.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38678403566807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38678403566707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19339201783403 + 19339201783404.

It is an arithmetic number, because the mean of its divisors is an integer number (19339201783404).

Almost surely, 2^{38678403566807} is an apocalyptic number.

38678403566807 is a deficient number, since it is larger than the sum of its proper divisors (1).

38678403566807 is an equidigital number, since it uses as much as digits as its factorization.

38678403566807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 975421440, while the sum is 71.

The spelling of 38678403566807 in words is "thirty-eight trillion, six hundred seventy-eight billion, four hundred three million, five hundred sixty-six thousand, eight hundred seven".