15872215787143 has 2 divisors, whose sum is σ = 15872215787144. Its totient is φ = 15872215787142.

The previous prime is 15872215787117. The next prime is 15872215787189. The reversal of 15872215787143 is 34178751227851.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15872215787143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15872215787543) 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 as a sum of consecutive naturals, namely, 7936107893571 + 7936107893572.

It is an arithmetic number, because the mean of its divisors is an integer number (7936107893572).

Almost surely, 2^{15872215787143} is an apocalyptic number.

15872215787143 is a deficient number, since it is larger than the sum of its proper divisors (1).

15872215787143 is an equidigital number, since it uses as much as digits as its factorization.

15872215787143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26342400, while the sum is 61.

The spelling of 15872215787143 in words is "fifteen trillion, eight hundred seventy-two billion, two hundred fifteen million, seven hundred eighty-seven thousand, one hundred forty-three".