13356165670785 has 48 divisors (see below), whose sum is σ = 26496666428544. Its totient is φ = 6096736141056.

The previous prime is 13356165670781. The next prime is 13356165670811. The reversal of 13356165670785 is 58707656165331.

It is a happy number.

13356165670785 is a `hidden beast` number, since 1 + 3 + 3 + 5 + 61 + 6 + 567 + 0 + 7 + 8 + 5 = 666.

It is not a de Polignac number, because 13356165670785 - 2² = 13356165670781 is a prime.

It is a super-2 number, since 2×13356165670785² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (13356165670781) 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 in 47 ways as a sum of consecutive naturals, for example, 30824772 + ... + 31255061.

It is an arithmetic number, because the mean of its divisors is an integer number (552013883928).

Almost surely, 2^{13356165670785} is an apocalyptic number.

13356165670785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13356165670785 is a deficient number, since it is larger than the sum of its proper divisors (13140500757759).

13356165670785 is a wasteful number, since it uses less digits than its factorization.

13356165670785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62080534 (or 62080531 counting only the distinct ones).

The product of its (nonzero) digits is 95256000, while the sum is 63.

The spelling of 13356165670785 in words is "thirteen trillion, three hundred fifty-six billion, one hundred sixty-five million, six hundred seventy thousand, seven hundred eighty-five".