123645475659 has 8 divisors (see below), whose sum is σ = 167971212432. Its totient is φ = 80875028000.

The previous prime is 123645475631. The next prime is 123645475691. The reversal of 123645475659 is 956574546321.

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

It is a cyclic number.

It is not a de Polignac number, because 123645475659 - 2⁵ = 123645475627 is a prime.

It is a super-2 number, since 2×123645475659² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123645475599 and 123645475608.

It is not an unprimeable number, because it can be changed into a prime (123645475619) 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, 388822092 + ... + 388822409.

It is an arithmetic number, because the mean of its divisors is an integer number (20996401554).

Almost surely, 2^123645475659 is an apocalyptic number.

123645475659 is a deficient number, since it is larger than the sum of its proper divisors (44325736773).

123645475659 is an equidigital number, since it uses as much as digits as its factorization.

123645475659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777644557.

The product of its digits is 27216000, while the sum is 57.

The spelling of 123645475659 in words is "one hundred twenty-three billion, six hundred forty-five million, four hundred seventy-five thousand, six hundred fifty-nine".