28803643149977 has 2 divisors, whose sum is σ = 28803643149978. Its totient is φ = 28803643149976.

The previous prime is 28803643149797. The next prime is 28803643150001. The reversal of 28803643149977 is 77994134630882.

Together with previous prime (28803643149797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21704594474761 + 7099048675216 = 4658819^2 + 2664404^2 .

It is a cyclic number.

It is not a de Polignac number, because 28803643149977 - 2¹⁰ = 28803643148953 is a prime.

It is a super-2 number, since 2×28803643149977² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28803643149977.

It is not a weakly prime, because it can be changed into another prime (28803643140977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14401821574988 + 14401821574989.

It is an arithmetic number, because the mean of its divisors is an integer number (14401821574989).

Almost surely, 2^{28803643149977} is an apocalyptic number.

It is an amenable number.

28803643149977 is a deficient number, since it is larger than the sum of its proper divisors (1).

28803643149977 is an equidigital number, since it uses as much as digits as its factorization.

28803643149977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 438939648, while the sum is 71.

The spelling of 28803643149977 in words is "twenty-eight trillion, eight hundred three billion, six hundred forty-three million, one hundred forty-nine thousand, nine hundred seventy-seven".