611695797389 has 2 divisors, whose sum is σ = 611695797390. Its totient is φ = 611695797388.

The previous prime is 611695797379. The next prime is 611695797397. The reversal of 611695797389 is 983797596116.

611695797389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 472367544100 + 139328253289 = 687290^2 + 373267^2 .

It is a cyclic number.

It is not a de Polignac number, because 611695797389 - 2²⁸ = 611427361933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611695797319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305847898694 + 305847898695.

It is an arithmetic number, because the mean of its divisors is an integer number (305847898695).

Almost surely, 2^611695797389 is an apocalyptic number.

It is an amenable number.

611695797389 is a deficient number, since it is larger than the sum of its proper divisors (1).

611695797389 is an equidigital number, since it uses as much as digits as its factorization.

611695797389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 154314720, while the sum is 71.

The spelling of 611695797389 in words is "six hundred eleven billion, six hundred ninety-five million, seven hundred ninety-seven thousand, three hundred eighty-nine".