1697365806423 has 16 divisors (see below), whose sum is σ = 2586593097216. Its totient is φ = 969874224480.

The previous prime is 1697365806391. The next prime is 1697365806427. The reversal of 1697365806423 is 3246085637961.

It is not a de Polignac number, because 1697365806423 - 2⁵ = 1697365806391 is a prime.

It is a super-2 number, since 2×1697365806423² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1697365806427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1618723 + ... + 2452548.

It is an arithmetic number, because the mean of its divisors is an integer number (161662068576).

It is a 1-persistent number, because it is pandigital, but 2⋅1697365806423 = 3394731612846 is not.

Almost surely, 2^{1697365806423} is an apocalyptic number.

1697365806423 is a deficient number, since it is larger than the sum of its proper divisors (889227290793).

1697365806423 is a wasteful number, since it uses less digits than its factorization.

1697365806423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4091134.

The product of its (nonzero) digits is 39191040, while the sum is 60.

The spelling of 1697365806423 in words is "one trillion, six hundred ninety-seven billion, three hundred sixty-five million, eight hundred six thousand, four hundred twenty-three".