28873121701 has 2 divisors, whose sum is σ = 28873121702. Its totient is φ = 28873121700.

The previous prime is 28873121659. The next prime is 28873121707. The reversal of 28873121701 is 10712137882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20050276801 + 8822844900 = 141599^2 + 93930^2 .

It is a cyclic number.

It is not a de Polignac number, because 28873121701 - 2⁷ = 28873121573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28873121707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14436560850 + 14436560851.

It is an arithmetic number, because the mean of its divisors is an integer number (14436560851).

Almost surely, 2^28873121701 is an apocalyptic number.

It is an amenable number.

28873121701 is a deficient number, since it is larger than the sum of its proper divisors (1).

28873121701 is an equidigital number, since it uses as much as digits as its factorization.

28873121701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 40.

The spelling of 28873121701 in words is "twenty-eight billion, eight hundred seventy-three million, one hundred twenty-one thousand, seven hundred one".