38619609432865 has 16 divisors (see below), whose sum is σ = 49069998916560. Its totient is φ = 29078070446080.

The previous prime is 38619609432851. The next prime is 38619609432883. The reversal of 38619609432865 is 56823490691683.

It can be written as a sum of positive squares in 8 ways, for example, as 1404253440144 + 37215355992721 = 1185012^2 + 6100439^2 .

It is not a de Polignac number, because 38619609432865 - 2⁹ = 38619609432353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38619609432794 and 38619609432803.

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 15 ways as a sum of consecutive naturals, for example, 9812595 + ... + 13172935.

It is an arithmetic number, because the mean of its divisors is an integer number (3066874932285).

Almost surely, 2^{38619609432865} is an apocalyptic number.

It is an amenable number.

38619609432865 is a deficient number, since it is larger than the sum of its proper divisors (10450389483695).

38619609432865 is a wasteful number, since it uses less digits than its factorization.

38619609432865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3495572.

The product of its (nonzero) digits is 403107840, while the sum is 70.

The spelling of 38619609432865 in words is "thirty-eight trillion, six hundred nineteen billion, six hundred nine million, four hundred thirty-two thousand, eight hundred sixty-five".