40002104381 has 2 divisors, whose sum is σ = 40002104382. Its totient is φ = 40002104380.

The previous prime is 40002104327. The next prime is 40002104393. The reversal of 40002104381 is 18340120004.

40002104381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37980163225 + 2021941156 = 194885^2 + 44966^2 .

It is a cyclic number.

It is not a de Polignac number, because 40002104381 - 2¹⁰ = 40002103357 is a prime.

It is a super-2 number, since 2×40002104381² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40002184381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20001052190 + 20001052191.

It is an arithmetic number, because the mean of its divisors is an integer number (20001052191).

Almost surely, 2^40002104381 is an apocalyptic number.

It is an amenable number.

40002104381 is a deficient number, since it is larger than the sum of its proper divisors (1).

40002104381 is an equidigital number, since it uses as much as digits as its factorization.

40002104381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 40002104381 its reverse (18340120004), we get a palindrome (58342224385).

The spelling of 40002104381 in words is "forty billion, two million, one hundred four thousand, three hundred eighty-one".