388566665867 has 2 divisors, whose sum is σ = 388566665868. Its totient is φ = 388566665866.

The previous prime is 388566665857. The next prime is 388566665911. The reversal of 388566665867 is 768566665883.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 388566665867 - 2¹⁴ = 388566649483 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 388566665794 and 388566665803.

It is not a weakly prime, because it can be changed into another prime (388566665807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194283332933 + 194283332934.

It is an arithmetic number, because the mean of its divisors is an integer number (194283332934).

Almost surely, 2^388566665867 is an apocalyptic number.

388566665867 is a deficient number, since it is larger than the sum of its proper divisors (1).

388566665867 is an equidigital number, since it uses as much as digits as its factorization.

388566665867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2090188800, while the sum is 74.

The spelling of 388566665867 in words is "three hundred eighty-eight billion, five hundred sixty-six million, six hundred sixty-five thousand, eight hundred sixty-seven".