2605104723789 has 24 divisors (see below), whose sum is σ = 3770785130112. Its totient is φ = 1733114335680.

The previous prime is 2605104723787. The next prime is 2605104723833. The reversal of 2605104723789 is 9873274015062.

It is a happy number.

2605104723789 is a `hidden beast` number, since 2 + 6 + 0 + 510 + 47 + 2 + 3 + 7 + 89 = 666.

It is not a de Polignac number, because 2605104723789 - 2¹ = 2605104723787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2605104723787) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8260092 + ... + 8569674.

It is an arithmetic number, because the mean of its divisors is an integer number (157116047088).

It is a 1-persistent number, because it is pandigital, but 2⋅2605104723789 = 5210209447578 is not.

Almost surely, 2^{2605104723789} is an apocalyptic number.

It is an amenable number.

2605104723789 is a deficient number, since it is larger than the sum of its proper divisors (1165680406323).

2605104723789 is a wasteful number, since it uses less digits than its factorization.

2605104723789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311537 (or 311534 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 2605104723789 in words is "two trillion, six hundred five billion, one hundred four million, seven hundred twenty-three thousand, seven hundred eighty-nine".