7563256318757 has 2 divisors, whose sum is σ = 7563256318758. Its totient is φ = 7563256318756.

The previous prime is 7563256318753. The next prime is 7563256318771. The reversal of 7563256318757 is 7578136523657.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7561323045796 + 1933272961 = 2749786^2 + 43969^2 .

It is a cyclic number.

It is not a de Polignac number, because 7563256318757 - 2² = 7563256318753 is a prime.

It is a super-2 number, since 2×7563256318757² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7563256318693 and 7563256318702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7563256318753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3781628159378 + 3781628159379.

It is an arithmetic number, because the mean of its divisors is an integer number (3781628159379).

Almost surely, 2^{7563256318757} is an apocalyptic number.

It is an amenable number.

7563256318757 is a deficient number, since it is larger than the sum of its proper divisors (1).

7563256318757 is an equidigital number, since it uses as much as digits as its factorization.

7563256318757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 222264000, while the sum is 65.

The spelling of 7563256318757 in words is "seven trillion, five hundred sixty-three billion, two hundred fifty-six million, three hundred eighteen thousand, seven hundred fifty-seven".