611402665429 has 2 divisors, whose sum is σ = 611402665430. Its totient is φ = 611402665428.

The previous prime is 611402665427. The next prime is 611402665459. The reversal of 611402665429 is 924566204116.

611402665429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 509831700625 + 101570964804 = 714025^2 + 318702^2 .

It is a cyclic number.

It is not a de Polignac number, because 611402665429 - 2¹ = 611402665427 is a prime.

Together with 611402665427, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611402665427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305701332714 + 305701332715.

It is an arithmetic number, because the mean of its divisors is an integer number (305701332715).

Almost surely, 2^611402665429 is an apocalyptic number.

It is an amenable number.

611402665429 is a deficient number, since it is larger than the sum of its proper divisors (1).

611402665429 is an equidigital number, since it uses as much as digits as its factorization.

611402665429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 611402665429 in words is "six hundred eleven billion, four hundred two million, six hundred sixty-five thousand, four hundred twenty-nine".