28766539037 has 2 divisors, whose sum is σ = 28766539038. Its totient is φ = 28766539036.

The previous prime is 28766539033. The next prime is 28766539051. The reversal of 28766539037 is 73093566782.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28762124836 + 4414201 = 169594^2 + 2101^2 .

It is a cyclic number.

It is not a de Polignac number, because 28766539037 - 2² = 28766539033 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28766539033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14383269518 + 14383269519.

It is an arithmetic number, because the mean of its divisors is an integer number (14383269519).

Almost surely, 2^28766539037 is an apocalyptic number.

It is an amenable number.

28766539037 is a deficient number, since it is larger than the sum of its proper divisors (1).

28766539037 is an equidigital number, since it uses as much as digits as its factorization.

28766539037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11430720, while the sum is 56.

The spelling of 28766539037 in words is "twenty-eight billion, seven hundred sixty-six million, five hundred thirty-nine thousand, thirty-seven".