611115616660331 has 2 divisors, whose sum is σ = 611115616660332. Its totient is φ = 611115616660330.

The previous prime is 611115616660303. The next prime is 611115616660343. The reversal of 611115616660331 is 133066616511116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 611115616660331 - 2⁶ = 611115616660267 is a prime.

It is a super-2 number, since 2×611115616660331² (a number of 30 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (611115616690331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305557808330165 + 305557808330166.

It is an arithmetic number, because the mean of its divisors is an integer number (305557808330166).

Almost surely, 2^{611115616660331} is an apocalyptic number.

611115616660331 is a deficient number, since it is larger than the sum of its proper divisors (1).

611115616660331 is an equidigital number, since it uses as much as digits as its factorization.

611115616660331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 47.

The spelling of 611115616660331 in words is "six hundred eleven trillion, one hundred fifteen billion, six hundred sixteen million, six hundred sixty thousand, three hundred thirty-one".