12571440463 has 8 divisors (see below), whose sum is σ = 13139012880. Its totient is φ = 12012806400.

The previous prime is 12571440461. The next prime is 12571440467. The reversal of 12571440463 is 36404417521.

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

It is a cyclic number.

It is not a de Polignac number, because 12571440463 - 2¹ = 12571440461 is a prime.

It is a super-2 number, since 2×12571440463² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12571440461) 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, 2231713 + ... + 2237338.

It is an arithmetic number, because the mean of its divisors is an integer number (1642376610).

Almost surely, 2^12571440463 is an apocalyptic number.

12571440463 is a deficient number, since it is larger than the sum of its proper divisors (567572417).

12571440463 is an equidigital number, since it uses as much as digits as its factorization.

12571440463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4469177.

The product of its (nonzero) digits is 80640, while the sum is 37.

Adding to 12571440463 its reverse (36404417521), we get a palindrome (48975857984).

The spelling of 12571440463 in words is "twelve billion, five hundred seventy-one million, four hundred forty thousand, four hundred sixty-three".