193491763199953 has 2 divisors, whose sum is σ = 193491763199954. Its totient is φ = 193491763199952.

The previous prime is 193491763199941. The next prime is 193491763200007. The reversal of 193491763199953 is 359991367194391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154993361834689 + 38498401365264 = 12449633^2 + 6204708^2 .

It is an emirp because it is prime and its reverse (359991367194391) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 193491763199953 - 2⁵ = 193491763199921 is a prime.

It is not a weakly prime, because it can be changed into another prime (193491763169953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96745881599976 + 96745881599977.

It is an arithmetic number, because the mean of its divisors is an integer number (96745881599977).

Almost surely, 2^{193491763199953} is an apocalyptic number.

It is an amenable number.

193491763199953 is a deficient number, since it is larger than the sum of its proper divisors (1).

193491763199953 is an equidigital number, since it uses as much as digits as its factorization.

193491763199953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1339231320, while the sum is 79.

The spelling of 193491763199953 in words is "one hundred ninety-three trillion, four hundred ninety-one billion, seven hundred sixty-three million, one hundred ninety-nine thousand, nine hundred fifty-three".