123897434671 has 16 divisors (see below), whose sum is σ = 128436399360. Its totient is φ = 119392842240.

The previous prime is 123897434651. The next prime is 123897434711. The reversal of 123897434671 is 176434798321.

It is a cyclic number.

It is not a de Polignac number, because 123897434671 - 2³¹ = 121749951023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123897434651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29659735 + ... + 29663911.

It is an arithmetic number, because the mean of its divisors is an integer number (8027274960).

Almost surely, 2^123897434671 is an apocalyptic number.

123897434671 is a deficient number, since it is larger than the sum of its proper divisors (4538964689).

123897434671 is a wasteful number, since it uses less digits than its factorization.

123897434671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8034.

The product of its digits is 6096384, while the sum is 55.

The spelling of 123897434671 in words is "one hundred twenty-three billion, eight hundred ninety-seven million, four hundred thirty-four thousand, six hundred seventy-one".