12938147665 has 8 divisors (see below), whose sum is σ = 15886842048. Its totient is φ = 10109808240.

The previous prime is 12938147597. The next prime is 12938147767. The reversal of 12938147665 is 56674183921.

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

It is not a de Polignac number, because 12938147665 - 2²¹ = 12936050513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30088501 + ... + 30088930.

It is an arithmetic number, because the mean of its divisors is an integer number (1985855256).

Almost surely, 2^12938147665 is an apocalyptic number.

It is an amenable number.

12938147665 is a deficient number, since it is larger than the sum of its proper divisors (2948694383).

12938147665 is an equidigital number, since it uses as much as digits as its factorization.

12938147665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60177479.

The product of its digits is 2177280, while the sum is 52.

The spelling of 12938147665 in words is "twelve billion, nine hundred thirty-eight million, one hundred forty-seven thousand, six hundred sixty-five".