28587317371 has 2 divisors, whose sum is σ = 28587317372. Its totient is φ = 28587317370.

The previous prime is 28587317309. The next prime is 28587317401. The reversal of 28587317371 is 17371378582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28587317371 - 2⁹ = 28587316859 is a prime.

It is not a weakly prime, because it can be changed into another prime (28587317471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14293658685 + 14293658686.

It is an arithmetic number, because the mean of its divisors is an integer number (14293658686).

Almost surely, 2^28587317371 is an apocalyptic number.

28587317371 is a deficient number, since it is larger than the sum of its proper divisors (1).

28587317371 is an equidigital number, since it uses as much as digits as its factorization.

28587317371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1975680, while the sum is 52.

The spelling of 28587317371 in words is "twenty-eight billion, five hundred eighty-seven million, three hundred seventeen thousand, three hundred seventy-one".