123196686144769 has 4 divisors (see below), whose sum is σ = 123507005253844. Its totient is φ = 122886367035696.

The previous prime is 123196686144703. The next prime is 123196686144781. The reversal of 123196686144769 is 967441686691321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 101601259265025 + 21595426879744 = 10079745^2 + 4647088^2 .

It is a cyclic number.

It is not a de Polignac number, because 123196686144769 - 2³⁵ = 123162326406401 is a prime.

It is a super-2 number, since 2×123196686144769² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123196686144799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155159553942 + ... + 155159554735.

It is an arithmetic number, because the mean of its divisors is an integer number (30876751313461).

Almost surely, 2^{123196686144769} is an apocalyptic number.

It is an amenable number.

123196686144769 is a deficient number, since it is larger than the sum of its proper divisors (310319109075).

123196686144769 is an equidigital number, since it uses as much as digits as its factorization.

123196686144769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310319109074.

The product of its digits is 564350976, while the sum is 73.

The spelling of 123196686144769 in words is "one hundred twenty-three trillion, one hundred ninety-six billion, six hundred eighty-six million, one hundred forty-four thousand, seven hundred sixty-nine".