193516421796325 has 12 divisors (see below), whose sum is σ = 239964231724740. Its totient is φ = 154810641503360.

The previous prime is 193516421796317. The next prime is 193516421796443. The reversal of 193516421796325 is 523697124615391.

It is a Cunningham number, because it is equal to 13911018²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 15171694947396 + 178344726848929 = 3895086^2 + 13354577^2 .

It is not a de Polignac number, because 193516421796325 - 2³ = 193516421796317 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60815890 + ... + 63918739.

It is an arithmetic number, because the mean of its divisors is an integer number (19997019310395).

Almost surely, 2^{193516421796325} is an apocalyptic number.

It is an amenable number.

193516421796325 is a deficient number, since it is larger than the sum of its proper divisors (46447809928415).

193516421796325 is a wasteful number, since it uses less digits than its factorization.

193516421796325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124796696 (or 124796691 counting only the distinct ones).

The product of its digits is 73483200, while the sum is 64.

The spelling of 193516421796325 in words is "one hundred ninety-three trillion, five hundred sixteen billion, four hundred twenty-one million, seven hundred ninety-six thousand, three hundred twenty-five".