28671026737 has 2 divisors, whose sum is σ = 28671026738. Its totient is φ = 28671026736.

The previous prime is 28671026723. The next prime is 28671026759. The reversal of 28671026737 is 73762017682.

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., 28079369761 + 591656976 = 167569^2 + 24324^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28671026737 is a prime.

It is not a weakly prime, because it can be changed into another prime (28671026707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14335513368 + 14335513369.

It is an arithmetic number, because the mean of its divisors is an integer number (14335513369).

Almost surely, 2^28671026737 is an apocalyptic number.

It is an amenable number.

28671026737 is a deficient number, since it is larger than the sum of its proper divisors (1).

28671026737 is an equidigital number, since it uses as much as digits as its factorization.

28671026737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1185408, while the sum is 49.

The spelling of 28671026737 in words is "twenty-eight billion, six hundred seventy-one million, twenty-six thousand, seven hundred thirty-seven".