611115620854913 has 2 divisors, whose sum is σ = 611115620854914. Its totient is φ = 611115620854912.

The previous prime is 611115620854903. The next prime is 611115620854951. The reversal of 611115620854913 is 319458026511116.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 408754099358224 + 202361521496689 = 20217668^2 + 14225383^2 .

It is a cyclic number.

It is not a de Polignac number, because 611115620854913 - 2⁴ = 611115620854897 is a prime.

It is not a weakly prime, because it can be changed into another prime (611115620854903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305557810427456 + 305557810427457.

It is an arithmetic number, because the mean of its divisors is an integer number (305557810427457).

Almost surely, 2^{611115620854913} is an apocalyptic number.

It is an amenable number.

611115620854913 is a deficient number, since it is larger than the sum of its proper divisors (1).

611115620854913 is an equidigital number, since it uses as much as digits as its factorization.

611115620854913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 53.

The spelling of 611115620854913 in words is "six hundred eleven trillion, one hundred fifteen billion, six hundred twenty million, eight hundred fifty-four thousand, nine hundred thirteen".