12520403387 has 8 divisors (see below), whose sum is σ = 12538703280. Its totient is φ = 12502118880.

The previous prime is 12520403377. The next prime is 12520403417. The reversal of 12520403387 is 78330402521.

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 12520403387 - 2¹² = 12520399291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12520403317) 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, 3840164 + ... + 3843422.

It is an arithmetic number, because the mean of its divisors is an integer number (1567337910).

Almost surely, 2^12520403387 is an apocalyptic number.

12520403387 is a deficient number, since it is larger than the sum of its proper divisors (18299893).

12520403387 is a wasteful number, since it uses less digits than its factorization.

12520403387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7693.

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 12520403387 in words is "twelve billion, five hundred twenty million, four hundred three thousand, three hundred eighty-seven".