3806810400005 has 4 divisors (see below), whose sum is σ = 4568172480012. Its totient is φ = 3045448320000.

The previous prime is 3806810399999. The next prime is 3806810400007. The reversal of 3806810400005 is 5000040186083.

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 1881415492609 + 1925394907396 = 1371647^2 + 1387586^2 .

It is not a de Polignac number, because 3806810400005 - 2¹⁸ = 3806810137861 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 (3806810400007) 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, 380681039996 + ... + 380681040005.

It is an arithmetic number, because the mean of its divisors is an integer number (1142043120003).

Almost surely, 2^{3806810400005} is an apocalyptic number.

It is an amenable number.

3806810400005 is a deficient number, since it is larger than the sum of its proper divisors (761362080007).

3806810400005 is an equidigital number, since it uses as much as digits as its factorization.

3806810400005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761362080006.

The product of its (nonzero) digits is 23040, while the sum is 35.

Adding to 3806810400005 its reverse (5000040186083), we get a palindrome (8806850586088).

The spelling of 3806810400005 in words is "three trillion, eight hundred six billion, eight hundred ten million, four hundred thousand, five".