15872871428587 has 2 divisors, whose sum is σ = 15872871428588. Its totient is φ = 15872871428586.

The previous prime is 15872871428489. The next prime is 15872871428591. The reversal of 15872871428587 is 78582417827851.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15872871428587 - 2⁷ = 15872871428459 is a prime.

It is not a weakly prime, because it can be changed into another prime (15872871428597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7936435714293 + 7936435714294.

It is an arithmetic number, because the mean of its divisors is an integer number (7936435714294).

Almost surely, 2^{15872871428587} is an apocalyptic number.

15872871428587 is a deficient number, since it is larger than the sum of its proper divisors (1).

15872871428587 is an equidigital number, since it uses as much as digits as its factorization.

15872871428587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 561971200, while the sum is 73.

The spelling of 15872871428587 in words is "fifteen trillion, eight hundred seventy-two billion, eight hundred seventy-one million, four hundred twenty-eight thousand, five hundred eighty-seven".