28677950237 has 2 divisors, whose sum is σ = 28677950238. Its totient is φ = 28677950236.

The previous prime is 28677950221. The next prime is 28677950243. The reversal of 28677950237 is 73205977682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28257946201 + 420004036 = 168101^2 + 20494^2 .

It is a cyclic number.

It is not a de Polignac number, because 28677950237 - 2⁴ = 28677950221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28677953237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14338975118 + 14338975119.

It is an arithmetic number, because the mean of its divisors is an integer number (14338975119).

Almost surely, 2^28677950237 is an apocalyptic number.

It is an amenable number.

28677950237 is a deficient number, since it is larger than the sum of its proper divisors (1).

28677950237 is an equidigital number, since it uses as much as digits as its factorization.

28677950237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8890560, while the sum is 56.

The spelling of 28677950237 in words is "twenty-eight billion, six hundred seventy-seven million, nine hundred fifty thousand, two hundred thirty-seven".