2104507786769 has 2 divisors, whose sum is σ = 2104507786770. Its totient is φ = 2104507786768.

The previous prime is 2104507786741. The next prime is 2104507786789. The reversal of 2104507786769 is 9676877054012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1213220740369 + 891287046400 = 1101463^2 + 944080^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2104507786769 is a prime.

It is a super-3 number, since 3×2104507786769³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (2104507786709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052253893384 + 1052253893385.

It is an arithmetic number, because the mean of its divisors is an integer number (1052253893385).

Almost surely, 2^{2104507786769} is an apocalyptic number.

It is an amenable number.

2104507786769 is a deficient number, since it is larger than the sum of its proper divisors (1).

2104507786769 is an equidigital number, since it uses as much as digits as its factorization.

2104507786769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35562240, while the sum is 62.

The spelling of 2104507786769 in words is "two trillion, one hundred four billion, five hundred seven million, seven hundred eighty-six thousand, seven hundred sixty-nine".