28076858137 has 2 divisors, whose sum is σ = 28076858138. Its totient is φ = 28076858136.

The previous prime is 28076858107. The next prime is 28076858141. The reversal of 28076858137 is 73185867082.

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., 23236734096 + 4840124041 = 152436^2 + 69571^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28076858137 is a prime.

It is a super-2 number, since 2×28076858137² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28076858107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14038429068 + 14038429069.

It is an arithmetic number, because the mean of its divisors is an integer number (14038429069).

Almost surely, 2^28076858137 is an apocalyptic number.

It is an amenable number.

28076858137 is a deficient number, since it is larger than the sum of its proper divisors (1).

28076858137 is an equidigital number, since it uses as much as digits as its factorization.

28076858137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4515840, while the sum is 55.

The spelling of 28076858137 in words is "twenty-eight billion, seventy-six million, eight hundred fifty-eight thousand, one hundred thirty-seven".