38365146128565 has 20 divisors (see below), whose sum is σ = 68773076764524. Its totient is φ = 20461411268352.

The previous prime is 38365146128539. The next prime is 38365146128579. The reversal of 38365146128565 is 56582164156383.

38365146128565 is a `hidden beast` number, since 3 + 8 + 3 + 6 + 5 + 1 + 4 + 61 + 2 + 8 + 565 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11127174690564 + 27237971438001 = 3335742^2 + 5219001^2 .

It is not a de Polignac number, because 38365146128565 - 2⁷ = 38365146128437 is a prime.

It is a super-2 number, since 2×38365146128565² (a number of 28 digits) contains 22 as substring.

It is a congruent 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 19 ways as a sum of consecutive naturals, for example, 47364377532 + ... + 47364378341.

Almost surely, 2^{38365146128565} is an apocalyptic number.

It is an amenable number.

38365146128565 is a deficient number, since it is larger than the sum of its proper divisors (30407930635959).

38365146128565 is an equidigital number, since it uses as much as digits as its factorization.

38365146128565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94728755890 (or 94728755881 counting only the distinct ones).

The product of its digits is 124416000, while the sum is 63.

The spelling of 38365146128565 in words is "thirty-eight trillion, three hundred sixty-five billion, one hundred forty-six million, one hundred twenty-eight thousand, five hundred sixty-five".