38316655665413 has 4 divisors (see below), whose sum is σ = 38376432039948. Its totient is φ = 38256879290880.

The previous prime is 38316655665397. The next prime is 38316655665443. The reversal of 38316655665413 is 31456655661383.

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 30179003705764 + 8137651959649 = 5493542^2 + 2852657^2 .

It is a cyclic number.

It is not a de Polignac number, because 38316655665413 - 2⁴ = 38316655665397 is a prime.

It is a super-2 number, since 2×38316655665413² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38316655665443) by changing a digit.

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, 29888186306 + ... + 29888187587.

It is an arithmetic number, because the mean of its divisors is an integer number (9594108009987).

Almost surely, 2^{38316655665413} is an apocalyptic number.

It is an amenable number.

38316655665413 is a deficient number, since it is larger than the sum of its proper divisors (59776374535).

38316655665413 is an equidigital number, since it uses as much as digits as its factorization.

38316655665413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59776374534.

The product of its digits is 139968000, while the sum is 62.

The spelling of 38316655665413 in words is "thirty-eight trillion, three hundred sixteen billion, six hundred fifty-five million, six hundred sixty-five thousand, four hundred thirteen".