7648788878453 has 2 divisors, whose sum is σ = 7648788878454. Its totient is φ = 7648788878452.

The previous prime is 7648788878449. The next prime is 7648788878527. The reversal of 7648788878453 is 3548788878467.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7238289825649 + 410499052804 = 2690407^2 + 640702^2 .

It is a cyclic number.

It is not a de Polignac number, because 7648788878453 - 2² = 7648788878449 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7648788878443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3824394439226 + 3824394439227.

It is an arithmetic number, because the mean of its divisors is an integer number (3824394439227).

Almost surely, 2^{7648788878453} is an apocalyptic number.

It is an amenable number.

7648788878453 is a deficient number, since it is larger than the sum of its proper divisors (1).

7648788878453 is an equidigital number, since it uses as much as digits as its factorization.

7648788878453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16184770560, while the sum is 83.

The spelling of 7648788878453 in words is "seven trillion, six hundred forty-eight billion, seven hundred eighty-eight million, eight hundred seventy-eight thousand, four hundred fifty-three".