2465736231521 has 2 divisors, whose sum is σ = 2465736231522. Its totient is φ = 2465736231520.

The previous prime is 2465736231509. The next prime is 2465736231559. The reversal of 2465736231521 is 1251326375642.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2402078418496 + 63657813025 = 1549864^2 + 252305^2 .

It is a cyclic number.

It is not a de Polignac number, because 2465736231521 - 2¹⁸ = 2465735969377 is a prime.

It is not a weakly prime, because it can be changed into another prime (2465736231821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1232868115760 + 1232868115761.

It is an arithmetic number, because the mean of its divisors is an integer number (1232868115761).

Almost surely, 2^{2465736231521} is an apocalyptic number.

It is an amenable number.

2465736231521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2465736231521 is an equidigital number, since it uses as much as digits as its factorization.

2465736231521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1814400, while the sum is 47.

The spelling of 2465736231521 in words is "two trillion, four hundred sixty-five billion, seven hundred thirty-six million, two hundred thirty-one thousand, five hundred twenty-one".