8013624144781 has 2 divisors, whose sum is σ = 8013624144782. Its totient is φ = 8013624144780.

The previous prime is 8013624144763. The next prime is 8013624144829. The reversal of 8013624144781 is 1874414263108.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6997791971556 + 1015832173225 = 2645334^2 + 1007885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8013624144781 is a prime.

It is a super-2 number, since 2×8013624144781² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8013624144731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4006812072390 + 4006812072391.

It is an arithmetic number, because the mean of its divisors is an integer number (4006812072391).

Almost surely, 2^{8013624144781} is an apocalyptic number.

It is an amenable number.

8013624144781 is a deficient number, since it is larger than the sum of its proper divisors (1).

8013624144781 is an equidigital number, since it uses as much as digits as its factorization.

8013624144781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1032192, while the sum is 49.

The spelling of 8013624144781 in words is "eight trillion, thirteen billion, six hundred twenty-four million, one hundred forty-four thousand, seven hundred eighty-one".