12501458787943 has 4 divisors (see below), whose sum is σ = 12839336052520. Its totient is φ = 12163581523368.

The previous prime is 12501458787899. The next prime is 12501458787947. The reversal of 12501458787943 is 34978785410521.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12501458787943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12501458787947) 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, 168938632233 + ... + 168938632306.

It is an arithmetic number, because the mean of its divisors is an integer number (3209834013130).

Almost surely, 2^{12501458787943} is an apocalyptic number.

12501458787943 is a deficient number, since it is larger than the sum of its proper divisors (337877264577).

12501458787943 is an equidigital number, since it uses as much as digits as its factorization.

12501458787943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337877264576.

The product of its (nonzero) digits is 67737600, while the sum is 64.

The spelling of 12501458787943 in words is "twelve trillion, five hundred one billion, four hundred fifty-eight million, seven hundred eighty-seven thousand, nine hundred forty-three".