4003761450781 has 2 divisors, whose sum is σ = 4003761450782. Its totient is φ = 4003761450780.

The previous prime is 4003761450713. The next prime is 4003761450869. The reversal of 4003761450781 is 1870541673004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3840290831556 + 163470619225 = 1959666^2 + 404315^2 .

It is a cyclic number.

It is not a de Polignac number, because 4003761450781 - 2²³ = 4003753062173 is a prime.

It is a super-2 number, since 2×4003761450781² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4003761400781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2001880725390 + 2001880725391.

It is an arithmetic number, because the mean of its divisors is an integer number (2001880725391).

Almost surely, 2^{4003761450781} is an apocalyptic number.

It is an amenable number.

4003761450781 is a deficient number, since it is larger than the sum of its proper divisors (1).

4003761450781 is an equidigital number, since it uses as much as digits as its factorization.

4003761450781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 4003761450781 in words is "four trillion, three billion, seven hundred sixty-one million, four hundred fifty thousand, seven hundred eighty-one".