28039844851201 has 2 divisors, whose sum is σ = 28039844851202. Its totient is φ = 28039844851200.

The previous prime is 28039844851189. The next prime is 28039844851231. The reversal of 28039844851201 is 10215844893082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26325313872400 + 1714530978801 = 5130820^2 + 1309401^2 .

It is a cyclic number.

It is not a de Polignac number, because 28039844851201 - 2³¹ = 28037697367553 is a prime.

It is a super-2 number, since 2×28039844851201² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28039844851231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14019922425600 + 14019922425601.

It is an arithmetic number, because the mean of its divisors is an integer number (14019922425601).

Almost surely, 2^{28039844851201} is an apocalyptic number.

It is an amenable number.

28039844851201 is a deficient number, since it is larger than the sum of its proper divisors (1).

28039844851201 is an equidigital number, since it uses as much as digits as its factorization.

28039844851201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4423680, while the sum is 55.

The spelling of 28039844851201 in words is "twenty-eight trillion, thirty-nine billion, eight hundred forty-four million, eight hundred fifty-one thousand, two hundred one".