611231542949 has 2 divisors, whose sum is σ = 611231542950. Its totient is φ = 611231542948.

The previous prime is 611231542921. The next prime is 611231542951. The reversal of 611231542949 is 949245132116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 611200294849 + 31248100 = 781793^2 + 5590^2 .

It is a cyclic number.

It is not a de Polignac number, because 611231542949 - 2²⁸ = 610963107493 is a prime.

Together with 611231542951, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611231542049) 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, 305615771474 + 305615771475.

It is an arithmetic number, because the mean of its divisors is an integer number (305615771475).

Almost surely, 2^611231542949 is an apocalyptic number.

It is an amenable number.

611231542949 is a deficient number, since it is larger than the sum of its proper divisors (1).

611231542949 is an equidigital number, since it uses as much as digits as its factorization.

611231542949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 47.

The spelling of 611231542949 in words is "six hundred eleven billion, two hundred thirty-one million, five hundred forty-two thousand, nine hundred forty-nine".