135696308623 has 2 divisors, whose sum is σ = 135696308624. Its totient is φ = 135696308622.

The previous prime is 135696308611. The next prime is 135696308659. The reversal of 135696308623 is 326803696531.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135696308623 - 2⁵ = 135696308591 is a prime.

It is a super-2 number, since 2×135696308623² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135696318623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67848154311 + 67848154312.

It is an arithmetic number, because the mean of its divisors is an integer number (67848154312).

Almost surely, 2^135696308623 is an apocalyptic number.

135696308623 is a deficient number, since it is larger than the sum of its proper divisors (1).

135696308623 is an equidigital number, since it uses as much as digits as its factorization.

135696308623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4199040, while the sum is 52.

The spelling of 135696308623 in words is "one hundred thirty-five billion, six hundred ninety-six million, three hundred eight thousand, six hundred twenty-three".