28000078037 has 2 divisors, whose sum is σ = 28000078038. Its totient is φ = 28000078036.

The previous prime is 28000078033. The next prime is 28000078039. The reversal of 28000078037 is 73087000082.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27478366756 + 521711281 = 165766^2 + 22841^2 .

It is a cyclic number.

It is not a de Polignac number, because 28000078037 - 2² = 28000078033 is a prime.

Together with 28000078039, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28000077988 and 28000078006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28000078033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14000039018 + 14000039019.

It is an arithmetic number, because the mean of its divisors is an integer number (14000039019).

Almost surely, 2^28000078037 is an apocalyptic number.

It is an amenable number.

28000078037 is a deficient number, since it is larger than the sum of its proper divisors (1).

28000078037 is an equidigital number, since it uses as much as digits as its factorization.

28000078037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 35.

The spelling of 28000078037 in words is "twenty-eight billion, seventy-eight thousand, thirty-seven".