12660408031 has 8 divisors (see below), whose sum is σ = 12837432384. Its totient is φ = 12483480960.

The previous prime is 12660408023. The next prime is 12660408043. The reversal of 12660408031 is 13080406621.

It is a happy number.

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 12660408031 - 2³ = 12660408023 is a prime.

It is a super-2 number, since 2×12660408031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12660407984 and 12660408002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12660408731) 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, 260970 + ... + 305656.

It is an arithmetic number, because the mean of its divisors is an integer number (1604679048).

Almost surely, 2^12660408031 is an apocalyptic number.

12660408031 is a deficient number, since it is larger than the sum of its proper divisors (177024353).

12660408031 is an equidigital number, since it uses as much as digits as its factorization.

12660408031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48641.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 12660408031 in words is "twelve billion, six hundred sixty million, four hundred eight thousand, thirty-one".