4261613968781 has 24 divisors (see below), whose sum is σ = 4717431235944. Its totient is φ = 3826983905280.

The previous prime is 4261613968771. The next prime is 4261613968837. The reversal of 4261613968781 is 1878693161624.

It can be written as a sum of positive squares in 12 ways, for example, as 288632190025 + 3972981778756 = 537245^2 + 1993234^2 .

It is not a de Polignac number, because 4261613968781 - 2¹⁰ = 4261613967757 is a prime.

It is a super-2 number, since 2×4261613968781² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4261613968771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 270381941 + ... + 270397701.

It is an arithmetic number, because the mean of its divisors is an integer number (196559634831).

Almost surely, 2^{4261613968781} is an apocalyptic number.

It is an amenable number.

4261613968781 is a deficient number, since it is larger than the sum of its proper divisors (455817267163).

4261613968781 is a wasteful number, since it uses less digits than its factorization.

4261613968781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31041 (or 31004 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 62.

The spelling of 4261613968781 in words is "four trillion, two hundred sixty-one billion, six hundred thirteen million, nine hundred sixty-eight thousand, seven hundred eighty-one".