28861775953 has 2 divisors, whose sum is σ = 28861775954. Its totient is φ = 28861775952.

The previous prime is 28861775869. The next prime is 28861776101. The reversal of 28861775953 is 35957716882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28861592769 + 183184 = 169887^2 + 428^2 .

It is a cyclic number.

It is not a de Polignac number, because 28861775953 - 2²¹ = 28859678801 is a prime.

It is a super-2 number, since 2×28861775953² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28861775891 and 28861775900.

It is not a weakly prime, because it can be changed into another prime (28861775153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14430887976 + 14430887977.

It is an arithmetic number, because the mean of its divisors is an integer number (14430887977).

Almost surely, 2^28861775953 is an apocalyptic number.

It is an amenable number.

28861775953 is a deficient number, since it is larger than the sum of its proper divisors (1).

28861775953 is an equidigital number, since it uses as much as digits as its factorization.

28861775953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25401600, while the sum is 61.

The spelling of 28861775953 in words is "twenty-eight billion, eight hundred sixty-one million, seven hundred seventy-five thousand, nine hundred fifty-three".