3645756261293 has 2 divisors, whose sum is σ = 3645756261294. Its totient is φ = 3645756261292.

The previous prime is 3645756261247. The next prime is 3645756261299. The reversal of 3645756261293 is 3921626575463.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3645705253129 + 51008164 = 1909373^2 + 7142^2 .

It is a cyclic number.

It is not a de Polignac number, because 3645756261293 - 2¹⁰ = 3645756260269 is a prime.

It is a super-2 number, since 2×3645756261293² (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 (3645756261299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822878130646 + 1822878130647.

It is an arithmetic number, because the mean of its divisors is an integer number (1822878130647).

Almost surely, 2^{3645756261293} is an apocalyptic number.

It is an amenable number.

3645756261293 is a deficient number, since it is larger than the sum of its proper divisors (1).

3645756261293 is an equidigital number, since it uses as much as digits as its factorization.

3645756261293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48988800, while the sum is 59.

The spelling of 3645756261293 in words is "three trillion, six hundred forty-five billion, seven hundred fifty-six million, two hundred sixty-one thousand, two hundred ninety-three".