12390356268 has 36 divisors (see below), whose sum is σ = 32126145240. Its totient is φ = 4129733160.

The previous prime is 12390356257. The next prime is 12390356269. The reversal of 12390356268 is 86265309321.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

12390356268 is a `hidden beast` number, since 1 + 2 + 39 + 0 + 356 + 268 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×12390356268³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12390356269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1151433 + ... + 1162143.

Almost surely, 2^12390356268 is an apocalyptic number.

12390356268 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12390356268 is an abundant number, since it is smaller than the sum of its proper divisors (19735788972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12390356268 is an frugal number, since it uses more digits than its factorization.

12390356268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21435 (or 10716 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 12390356268 in words is "twelve billion, three hundred ninety million, three hundred fifty-six thousand, two hundred sixty-eight".