3807138553481 has 2 divisors, whose sum is σ = 3807138553482. Its totient is φ = 3807138553480.

The previous prime is 3807138553411. The next prime is 3807138553507. The reversal of 3807138553481 is 1843558317083.

3807138553481 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., 3792791305081 + 14347248400 = 1947509^2 + 119780^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3807138553481 is a prime.

It is a super-2 number, since 2×3807138553481² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3807138553411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1903569276740 + 1903569276741.

It is an arithmetic number, because the mean of its divisors is an integer number (1903569276741).

Almost surely, 2^{3807138553481} is an apocalyptic number.

It is an amenable number.

3807138553481 is a deficient number, since it is larger than the sum of its proper divisors (1).

3807138553481 is an equidigital number, since it uses as much as digits as its factorization.

3807138553481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9676800, while the sum is 56.

The spelling of 3807138553481 in words is "three trillion, eight hundred seven billion, one hundred thirty-eight million, five hundred fifty-three thousand, four hundred eighty-one".