38721131002105 has 4 divisors (see below), whose sum is σ = 46465357202532. Its totient is φ = 30976904801680.

The previous prime is 38721131002097. The next prime is 38721131002121. The reversal of 38721131002105 is 50120013112783.

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 8930755702969 + 29790375299136 = 2988437^2 + 5458056^2 .

It is not a de Polignac number, because 38721131002105 - 2³ = 38721131002097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3872113100206 + ... + 3872113100215.

It is an arithmetic number, because the mean of its divisors is an integer number (11616339300633).

Almost surely, 2^{38721131002105} is an apocalyptic number.

It is an amenable number.

38721131002105 is a deficient number, since it is larger than the sum of its proper divisors (7744226200427).

38721131002105 is an equidigital number, since it uses as much as digits as its factorization.

38721131002105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7744226200426.

The product of its (nonzero) digits is 10080, while the sum is 34.

Adding to 38721131002105 its reverse (50120013112783), we get a palindrome (88841144114888).

The spelling of 38721131002105 in words is "thirty-eight trillion, seven hundred twenty-one billion, one hundred thirty-one million, two thousand, one hundred five".