264363747481 has 2 divisors, whose sum is σ = 264363747482. Its totient is φ = 264363747480.

The previous prime is 264363747467. The next prime is 264363747539. The reversal of 264363747481 is 184747363462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 261877827600 + 2485919881 = 511740^2 + 49859^2 .

It is a cyclic number.

It is not a de Polignac number, because 264363747481 - 2¹⁹ = 264363223193 is a prime.

It is a super-2 number, since 2×264363747481² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (264363757481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132181873740 + 132181873741.

It is an arithmetic number, because the mean of its divisors is an integer number (132181873741).

Almost surely, 2^264363747481 is an apocalyptic number.

It is an amenable number.

264363747481 is a deficient number, since it is larger than the sum of its proper divisors (1).

264363747481 is an equidigital number, since it uses as much as digits as its factorization.

264363747481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16257024, while the sum is 55.

The spelling of 264363747481 in words is "two hundred sixty-four billion, three hundred sixty-three million, seven hundred forty-seven thousand, four hundred eighty-one".