12731953965 has 8 divisors (see below), whose sum is σ = 20371126368. Its totient is φ = 6790375440.

The previous prime is 12731953951. The next prime is 12731954003. The reversal of 12731953965 is 56935913721.

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

It is not a de Polignac number, because 12731953965 - 2⁵ = 12731953933 is a prime.

It is a super-4 number, since 4×12731953965⁴ (a number of 42 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

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, 424398451 + ... + 424398480.

It is an arithmetic number, because the mean of its divisors is an integer number (2546390796).

Almost surely, 2^12731953965 is an apocalyptic number.

12731953965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12731953965 is a deficient number, since it is larger than the sum of its proper divisors (7639172403).

12731953965 is an equidigital number, since it uses as much as digits as its factorization.

12731953965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848796939.

The product of its digits is 1530900, while the sum is 51.

The spelling of 12731953965 in words is "twelve billion, seven hundred thirty-one million, nine hundred fifty-three thousand, nine hundred sixty-five".