611115616666957 has 2 divisors, whose sum is σ = 611115616666958. Its totient is φ = 611115616666956.

The previous prime is 611115616666931. The next prime is 611115616666979. The reversal of 611115616666957 is 759666616511116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 441995709405636 + 169119907261321 = 21023694^2 + 13004611^2 .

It is a cyclic number.

It is not a de Polignac number, because 611115616666957 - 2⁷ = 611115616666829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 611115616666892 and 611115616666901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611115616666757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305557808333478 + 305557808333479.

It is an arithmetic number, because the mean of its divisors is an integer number (305557808333479).

Almost surely, 2^{611115616666957} is an apocalyptic number.

It is an amenable number.

611115616666957 is a deficient number, since it is larger than the sum of its proper divisors (1).

611115616666957 is an equidigital number, since it uses as much as digits as its factorization.

611115616666957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73483200, while the sum is 67.

The spelling of 611115616666957 in words is "six hundred eleven trillion, one hundred fifteen billion, six hundred sixteen million, six hundred sixty-six thousand, nine hundred fifty-seven".