28971827707 has 2 divisors, whose sum is σ = 28971827708. Its totient is φ = 28971827706.

The previous prime is 28971827611. The next prime is 28971827761. The reversal of 28971827707 is 70772817982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28971827707 - 2³¹ = 26824344059 is a prime.

It is not a weakly prime, because it can be changed into another prime (28971827767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14485913853 + 14485913854.

It is an arithmetic number, because the mean of its divisors is an integer number (14485913854).

Almost surely, 2^28971827707 is an apocalyptic number.

28971827707 is a deficient number, since it is larger than the sum of its proper divisors (1).

28971827707 is an equidigital number, since it uses as much as digits as its factorization.

28971827707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5531904, while the sum is 58.

The spelling of 28971827707 in words is "twenty-eight billion, nine hundred seventy-one million, eight hundred twenty-seven thousand, seven hundred seven".