12423647765971 has 32 divisors (see below), whose sum is σ = 14912763647040. Its totient is φ = 10224748744704.

The previous prime is 12423647765953. The next prime is 12423647766041. The reversal of 12423647765971 is 17956774632421.

It is a happy number.

It is not a de Polignac number, because 12423647765971 - 2⁷ = 12423647765843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12423647763971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85305511 + ... + 85451023.

It is an arithmetic number, because the mean of its divisors is an integer number (466023863970).

Almost surely, 2^{12423647765971} is an apocalyptic number.

12423647765971 is a deficient number, since it is larger than the sum of its proper divisors (2489115881069).

12423647765971 is a wasteful number, since it uses less digits than its factorization.

12423647765971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165895.

The product of its digits is 106686720, while the sum is 64.

The spelling of 12423647765971 in words is "twelve trillion, four hundred twenty-three billion, six hundred forty-seven million, seven hundred sixty-five thousand, nine hundred seventy-one".