61210850320393 has 2 divisors, whose sum is σ = 61210850320394. Its totient is φ = 61210850320392.

The previous prime is 61210850320381. The next prime is 61210850320447. The reversal of 61210850320393 is 39302305801216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30884550267769 + 30326300052624 = 5557387^2 + 5506932^2 .

It is a cyclic number.

It is not a de Polignac number, because 61210850320393 - 2¹³ = 61210850312201 is a prime.

It is not a weakly prime, because it can be changed into another prime (61210850326393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30605425160196 + 30605425160197.

It is an arithmetic number, because the mean of its divisors is an integer number (30605425160197).

Almost surely, 2^{61210850320393} is an apocalyptic number.

It is an amenable number.

61210850320393 is a deficient number, since it is larger than the sum of its proper divisors (1).

61210850320393 is an equidigital number, since it uses as much as digits as its factorization.

61210850320393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 61210850320393 in words is "sixty-one trillion, two hundred ten billion, eight hundred fifty million, three hundred twenty thousand, three hundred ninety-three".