611005605101 has 2 divisors, whose sum is σ = 611005605102. Its totient is φ = 611005605100.

The previous prime is 611005605097. The next prime is 611005605109. The reversal of 611005605101 is 101506500116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 550341422500 + 60664182601 = 741850^2 + 246301^2 .

It is a cyclic number.

It is not a de Polignac number, because 611005605101 - 2² = 611005605097 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611005605109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305502802550 + 305502802551.

It is an arithmetic number, because the mean of its divisors is an integer number (305502802551).

Almost surely, 2^611005605101 is an apocalyptic number.

It is an amenable number.

611005605101 is a deficient number, since it is larger than the sum of its proper divisors (1).

611005605101 is an equidigital number, since it uses as much as digits as its factorization.

611005605101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 26.

The spelling of 611005605101 in words is "six hundred eleven billion, five million, six hundred five thousand, one hundred one".