38626223320561 has 4 divisors (see below), whose sum is σ = 39155349667492. Its totient is φ = 38097096973632.

The previous prime is 38626223320549. The next prime is 38626223320613. The reversal of 38626223320561 is 16502332262683.

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 28211564839936 + 10414658480625 = 5311456^2 + 3227175^2 .

It is a cyclic number.

It is not a de Polignac number, because 38626223320561 - 2³⁹ = 38076467506673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38626223320361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264563173356 + ... + 264563173501.

It is an arithmetic number, because the mean of its divisors is an integer number (9788837416873).

Almost surely, 2^{38626223320561} is an apocalyptic number.

It is an amenable number.

38626223320561 is a deficient number, since it is larger than the sum of its proper divisors (529126346931).

38626223320561 is an equidigital number, since it uses as much as digits as its factorization.

38626223320561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529126346930.

The product of its (nonzero) digits is 3732480, while the sum is 49.

The spelling of 38626223320561 in words is "thirty-eight trillion, six hundred twenty-six billion, two hundred twenty-three million, three hundred twenty thousand, five hundred sixty-one".