28927011637 has 2 divisors, whose sum is σ = 28927011638. Its totient is φ = 28927011636.

The previous prime is 28927011601. The next prime is 28927011653. The reversal of 28927011637 is 73611072982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25893315396 + 3033696241 = 160914^2 + 55079^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28927011637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28927011697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14463505818 + 14463505819.

It is an arithmetic number, because the mean of its divisors is an integer number (14463505819).

Almost surely, 2^28927011637 is an apocalyptic number.

It is an amenable number.

28927011637 is a deficient number, since it is larger than the sum of its proper divisors (1).

28927011637 is an equidigital number, since it uses as much as digits as its factorization.

28927011637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 46.

The spelling of 28927011637 in words is "twenty-eight billion, nine hundred twenty-seven million, eleven thousand, six hundred thirty-seven".