12720269895 has 8 divisors (see below), whose sum is σ = 20352431856. Its totient is φ = 6784143936.

The previous prime is 12720269893. The next prime is 12720269917. The reversal of 12720269895 is 59896202721.

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

It is not a de Polignac number, because 12720269895 - 2¹ = 12720269893 is a prime.

It is a super-2 number, since 2×12720269895² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12720269893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424008982 + ... + 424009011.

It is an arithmetic number, because the mean of its divisors is an integer number (2544053982).

Almost surely, 2^12720269895 is an apocalyptic number.

12720269895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12720269895 is a deficient number, since it is larger than the sum of its proper divisors (7632161961).

12720269895 is an equidigital number, since it uses as much as digits as its factorization.

12720269895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848018001.

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 12720269895 in words is "twelve billion, seven hundred twenty million, two hundred sixty-nine thousand, eight hundred ninety-five".