17765916061 has 2 divisors, whose sum is σ = 17765916062. Its totient is φ = 17765916060.

The previous prime is 17765916053. The next prime is 17765916073. The reversal of 17765916061 is 16061956771.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14139588100 + 3626327961 = 118910^2 + 60219^2 .

It is a cyclic number.

It is not a de Polignac number, because 17765916061 - 2³ = 17765916053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17765915996 and 17765916014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17765916661) 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, 8882958030 + 8882958031.

It is an arithmetic number, because the mean of its divisors is an integer number (8882958031).

Almost surely, 2^17765916061 is an apocalyptic number.

It is an amenable number.

17765916061 is a deficient number, since it is larger than the sum of its proper divisors (1).

17765916061 is an equidigital number, since it uses as much as digits as its factorization.

17765916061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 476280, while the sum is 49.

The spelling of 17765916061 in words is "seventeen billion, seven hundred sixty-five million, nine hundred sixteen thousand, sixty-one".