77596197953 has 2 divisors, whose sum is σ = 77596197954. Its totient is φ = 77596197952.

The previous prime is 77596197947. The next prime is 77596197983. The reversal of 77596197953 is 35979169577.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47531412289 + 30064785664 = 218017^2 + 173392^2 .

It is a cyclic number.

It is not a de Polignac number, because 77596197953 - 2²⁰ = 77595149377 is a prime.

It is a super-2 number, since 2×77596197953² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (77596197983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38798098976 + 38798098977.

It is an arithmetic number, because the mean of its divisors is an integer number (38798098977).

Almost surely, 2^77596197953 is an apocalyptic number.

It is an amenable number.

77596197953 is a deficient number, since it is larger than the sum of its proper divisors (1).

77596197953 is an equidigital number, since it uses as much as digits as its factorization.

77596197953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112521150, while the sum is 68.

The spelling of 77596197953 in words is "seventy-seven billion, five hundred ninety-six million, one hundred ninety-seven thousand, nine hundred fifty-three".