28737011161 has 2 divisors, whose sum is σ = 28737011162. Its totient is φ = 28737011160.

The previous prime is 28737011119. The next prime is 28737011167. The reversal of 28737011161 is 16111073782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25814527561 + 2922483600 = 160669^2 + 54060^2 .

It is a cyclic number.

It is not a de Polignac number, because 28737011161 - 2¹¹ = 28737009113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28737011161.

It is not a weakly prime, because it can be changed into another prime (28737011167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14368505580 + 14368505581.

It is an arithmetic number, because the mean of its divisors is an integer number (14368505581).

Almost surely, 2^28737011161 is an apocalyptic number.

It is an amenable number.

28737011161 is a deficient number, since it is larger than the sum of its proper divisors (1).

28737011161 is an equidigital number, since it uses as much as digits as its factorization.

28737011161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 37.

The spelling of 28737011161 in words is "twenty-eight billion, seven hundred thirty-seven million, eleven thousand, one hundred sixty-one".