7712187321953 has 2 divisors, whose sum is σ = 7712187321954. Its totient is φ = 7712187321952.

The previous prime is 7712187321931. The next prime is 7712187321959. The reversal of 7712187321953 is 3591237812177.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6624822220129 + 1087365101824 = 2573873^2 + 1042768^2 .

It is an emirp because it is prime and its reverse (3591237812177) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7712187321953 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (7712187321959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3856093660976 + 3856093660977.

It is an arithmetic number, because the mean of its divisors is an integer number (3856093660977).

Almost surely, 2^{7712187321953} is an apocalyptic number.

It is an amenable number.

7712187321953 is a deficient number, since it is larger than the sum of its proper divisors (1).

7712187321953 is an equidigital number, since it uses as much as digits as its factorization.

7712187321953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4445280, while the sum is 56.

The spelling of 7712187321953 in words is "seven trillion, seven hundred twelve billion, one hundred eighty-seven million, three hundred twenty-one thousand, nine hundred fifty-three".