12501458787942 has 160 divisors (see below), whose sum is σ = 28419159938400. Its totient is φ = 4106993932800.

The previous prime is 12501458787899. The next prime is 12501458787947. The reversal of 12501458787942 is 24978785410521.

12501458787942 is a `hidden beast` number, since 1 + 2 + 5 + 0 + 1 + 4 + 587 + 8 + 7 + 9 + 42 = 666.

It is a super-2 number, since 2×12501458787942² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12501458787942.

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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 10172056984 + ... + 10172058212.

It is an arithmetic number, because the mean of its divisors is an integer number (177619749615).

Almost surely, 2^{12501458787942} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12501458787942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14209579969200).

12501458787942 is an abundant number, since it is smaller than the sum of its proper divisors (15917701150458).

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

12501458787942 is a wasteful number, since it uses less digits than its factorization.

12501458787942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3044 (or 3035 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 63.

The spelling of 12501458787942 in words is "twelve trillion, five hundred one billion, four hundred fifty-eight million, seven hundred eighty-seven thousand, nine hundred forty-two".