7727423406553 has 2 divisors, whose sum is σ = 7727423406554. Its totient is φ = 7727423406552.

The previous prime is 7727423406517. The next prime is 7727423406559. The reversal of 7727423406553 is 3556043247277.

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., 6315611295744 + 1411812110809 = 2513088^2 + 1188197^2 .

It is a cyclic number.

It is not a de Polignac number, because 7727423406553 - 2⁹ = 7727423406041 is a prime.

It is a super-2 number, since 2×7727423406553² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7727423406494 and 7727423406503.

It is not a weakly prime, because it can be changed into another prime (7727423406559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3863711703276 + 3863711703277.

It is an arithmetic number, because the mean of its divisors is an integer number (3863711703277).

Almost surely, 2^{7727423406553} is an apocalyptic number.

It is an amenable number.

7727423406553 is a deficient number, since it is larger than the sum of its proper divisors (1).

7727423406553 is an equidigital number, since it uses as much as digits as its factorization.

7727423406553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29635200, while the sum is 55.

The spelling of 7727423406553 in words is "seven trillion, seven hundred twenty-seven billion, four hundred twenty-three million, four hundred six thousand, five hundred fifty-three".