77248999853 has 2 divisors, whose sum is σ = 77248999854. Its totient is φ = 77248999852.

The previous prime is 77248999843. The next prime is 77248999907. The reversal of 77248999853 is 35899984277.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39896866564 + 37352133289 = 199742^2 + 193267^2 .

It is a cyclic number.

It is not a de Polignac number, because 77248999853 - 2³⁴ = 60069130669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77248999823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38624499926 + 38624499927.

It is an arithmetic number, because the mean of its divisors is an integer number (38624499927).

Almost surely, 2^77248999853 is an apocalyptic number.

It is an amenable number.

77248999853 is a deficient number, since it is larger than the sum of its proper divisors (1).

77248999853 is an equidigital number, since it uses as much as digits as its factorization.

77248999853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 274337280, while the sum is 71.

The spelling of 77248999853 in words is "seventy-seven billion, two hundred forty-eight million, nine hundred ninety-nine thousand, eight hundred fifty-three".