135363778816731 has 8 divisors (see below), whose sum is σ = 180839625926160. Its totient is φ = 90065225459232.

The previous prime is 135363778816711. The next prime is 135363778816751. The reversal of 135363778816731 is 137618877363531.

It is an interprime number because it is at equal distance from previous prime (135363778816711) and next prime (135363778816751).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135363778816731 - 2⁵ = 135363778816699 is a prime.

It is a super-2 number, since 2×135363778816731² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135363778816711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44323436200 + ... + 44323439253.

It is an arithmetic number, because the mean of its divisors is an integer number (22604953240770).

Almost surely, 2^{135363778816731} is an apocalyptic number.

135363778816731 is a deficient number, since it is larger than the sum of its proper divisors (45475847109429).

135363778816731 is an equidigital number, since it uses as much as digits as its factorization.

135363778816731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88646875965.

The product of its digits is 320060160, while the sum is 69.

The spelling of 135363778816731 in words is "one hundred thirty-five trillion, three hundred sixty-three billion, seven hundred seventy-eight million, eight hundred sixteen thousand, seven hundred thirty-one".