123137645069 has 8 divisors (see below), whose sum is σ = 127200729600. Its totient is φ = 119080242000.

The previous prime is 123137645023. The next prime is 123137645089. The reversal of 123137645069 is 960546731321.

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 123137645069 - 2¹² = 123137640973 is a prime.

It is a super-2 number, since 2×123137645069² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123137645089) 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 7 ways as a sum of consecutive naturals, for example, 1376282 + ... + 1463019.

It is an arithmetic number, because the mean of its divisors is an integer number (15900091200).

Almost surely, 2^123137645069 is an apocalyptic number.

It is an amenable number.

123137645069 is a deficient number, since it is larger than the sum of its proper divisors (4063084531).

123137645069 is a wasteful number, since it uses less digits than its factorization.

123137645069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2840731.

The product of its (nonzero) digits is 816480, while the sum is 47.

The spelling of 123137645069 in words is "one hundred twenty-three billion, one hundred thirty-seven million, six hundred forty-five thousand, sixty-nine".