388297057105 has 4 divisors (see below), whose sum is σ = 465956468532. Its totient is φ = 310637645680.

The previous prime is 388297057087. The next prime is 388297057129. The reversal of 388297057105 is 501750792883.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 128353093696 + 259943963409 = 358264^2 + 509847^2 .

It is not a de Polignac number, because 388297057105 - 2²¹ = 388294959953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 38829705706 + ... + 38829705715.

It is an arithmetic number, because the mean of its divisors is an integer number (116489117133).

Almost surely, 2^388297057105 is an apocalyptic number.

It is an amenable number.

388297057105 is a deficient number, since it is larger than the sum of its proper divisors (77659411427).

388297057105 is an equidigital number, since it uses as much as digits as its factorization.

388297057105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77659411426.

The product of its (nonzero) digits is 4233600, while the sum is 55.

The spelling of 388297057105 in words is "three hundred eighty-eight billion, two hundred ninety-seven million, fifty-seven thousand, one hundred five".