7745272070749 has 2 divisors, whose sum is σ = 7745272070750. Its totient is φ = 7745272070748.

The previous prime is 7745272070741. The next prime is 7745272070773. The reversal of 7745272070749 is 9470702725477.

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., 4399233579225 + 3346038491524 = 2097435^2 + 1829218^2 .

It is a cyclic number.

It is not a de Polignac number, because 7745272070749 - 2³ = 7745272070741 is a prime.

It is a super-2 number, since 2×7745272070749² (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 (7745272070741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3872636035374 + 3872636035375.

It is an arithmetic number, because the mean of its divisors is an integer number (3872636035375).

Almost surely, 2^{7745272070749} is an apocalyptic number.

It is an amenable number.

7745272070749 is a deficient number, since it is larger than the sum of its proper divisors (1).

7745272070749 is an equidigital number, since it uses as much as digits as its factorization.

7745272070749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48404160, while the sum is 61.

The spelling of 7745272070749 in words is "seven trillion, seven hundred forty-five billion, two hundred seventy-two million, seventy thousand, seven hundred forty-nine".