38121310133 has 4 divisors (see below), whose sum is σ = 38140401420. Its totient is φ = 38102218848.

The previous prime is 38121310069. The next prime is 38121310147. The reversal of 38121310133 is 33101312183.

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 755260324 + 37366049809 = 27482^2 + 193303^2 .

It is a cyclic number.

It is not a de Polignac number, because 38121310133 - 2⁶ = 38121310069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38121318133) 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, 9542648 + ... + 9546641.

It is an arithmetic number, because the mean of its divisors is an integer number (9535100355).

Almost surely, 2^38121310133 is an apocalyptic number.

It is an amenable number.

38121310133 is a deficient number, since it is larger than the sum of its proper divisors (19091287).

38121310133 is a wasteful number, since it uses less digits than its factorization.

38121310133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19091286.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 38121310133 in words is "thirty-eight billion, one hundred twenty-one million, three hundred ten thousand, one hundred thirty-three".