12501017387 has 4 divisors (see below), whose sum is σ = 12549659736. Its totient is φ = 12452375040.

The previous prime is 12501017369. The next prime is 12501017393. The reversal of 12501017387 is 78371010521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12501017387 - 2¹⁸ = 12500755243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12501017587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24320789 + ... + 24321302.

It is an arithmetic number, because the mean of its divisors is an integer number (3137414934).

Almost surely, 2^12501017387 is an apocalyptic number.

12501017387 is a deficient number, since it is larger than the sum of its proper divisors (48642349).

12501017387 is an equidigital number, since it uses as much as digits as its factorization.

12501017387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48642348.

The product of its (nonzero) digits is 11760, while the sum is 35.

The spelling of 12501017387 in words is "twelve billion, five hundred one million, seventeen thousand, three hundred eighty-seven".