11916345061 has 2 divisors, whose sum is σ = 11916345062. Its totient is φ = 11916345060.

The previous prime is 11916344987. The next prime is 11916345073. The reversal of 11916345061 is 16054361911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6710722561 + 5205622500 = 81919^2 + 72150^2 .

It is a cyclic number.

It is not a de Polignac number, because 11916345061 - 2⁷ = 11916344933 is a prime.

It is a super-2 number, since 2×11916345061² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11916345061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11916345461) 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, 5958172530 + 5958172531.

It is an arithmetic number, because the mean of its divisors is an integer number (5958172531).

Almost surely, 2^11916345061 is an apocalyptic number.

It is an amenable number.

11916345061 is a deficient number, since it is larger than the sum of its proper divisors (1).

11916345061 is an equidigital number, since it uses as much as digits as its factorization.

11916345061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 37.

The spelling of 11916345061 in words is "eleven billion, nine hundred sixteen million, three hundred forty-five thousand, sixty-one".