38685387511 has 2 divisors, whose sum is σ = 38685387512. Its totient is φ = 38685387510.

The previous prime is 38685387479. The next prime is 38685387529. The reversal of 38685387511 is 11578358683.

It is a strong prime.

It is an emirp because it is prime and its reverse (11578358683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38685387511 - 2⁵ = 38685387479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38685387911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19342693755 + 19342693756.

It is an arithmetic number, because the mean of its divisors is an integer number (19342693756).

Almost surely, 2^38685387511 is an apocalyptic number.

38685387511 is a deficient number, since it is larger than the sum of its proper divisors (1).

38685387511 is an equidigital number, since it uses as much as digits as its factorization.

38685387511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4838400, while the sum is 55.

The spelling of 38685387511 in words is "thirty-eight billion, six hundred eighty-five million, three hundred eighty-seven thousand, five hundred eleven".