17764617061 has 2 divisors, whose sum is σ = 17764617062. Its totient is φ = 17764617060.

The previous prime is 17764617023. The next prime is 17764617089. The reversal of 17764617061 is 16071646771.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17763824961 + 792100 = 133281^2 + 890^2 .

It is a cyclic number.

It is not a de Polignac number, because 17764617061 - 2⁹ = 17764616549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17764614061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8882308530 + 8882308531.

It is an arithmetic number, because the mean of its divisors is an integer number (8882308531).

Almost surely, 2^17764617061 is an apocalyptic number.

It is an amenable number.

17764617061 is a deficient number, since it is larger than the sum of its proper divisors (1).

17764617061 is an equidigital number, since it uses as much as digits as its factorization.

17764617061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 296352, while the sum is 46.

The spelling of 17764617061 in words is "seventeen billion, seven hundred sixty-four million, six hundred seventeen thousand, sixty-one".