19768510620701 has 2 divisors, whose sum is σ = 19768510620702. Its totient is φ = 19768510620700.

The previous prime is 19768510620679. The next prime is 19768510620799. The reversal of 19768510620701 is 10702601586791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17572646016676 + 2195864604025 = 4191974^2 + 1481845^2 .

It is a cyclic number.

It is not a de Polignac number, because 19768510620701 - 2¹⁸ = 19768510358557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19768510620401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9884255310350 + 9884255310351.

It is an arithmetic number, because the mean of its divisors is an integer number (9884255310351).

Almost surely, 2^{19768510620701} is an apocalyptic number.

It is an amenable number.

19768510620701 is a deficient number, since it is larger than the sum of its proper divisors (1).

19768510620701 is an equidigital number, since it uses as much as digits as its factorization.

19768510620701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 53.

The spelling of 19768510620701 in words is "nineteen trillion, seven hundred sixty-eight billion, five hundred ten million, six hundred twenty thousand, seven hundred one".