28131736739 has 2 divisors, whose sum is σ = 28131736740. Its totient is φ = 28131736738.

The previous prime is 28131736729. The next prime is 28131736753. The reversal of 28131736739 is 93763713182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28131736739 - 2¹⁶ = 28131671203 is a prime.

It is a super-2 number, since 2×28131736739² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28131736709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14065868369 + 14065868370.

It is an arithmetic number, because the mean of its divisors is an integer number (14065868370).

Almost surely, 2^28131736739 is an apocalyptic number.

28131736739 is a deficient number, since it is larger than the sum of its proper divisors (1).

28131736739 is an equidigital number, since it uses as much as digits as its factorization.

28131736739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 50.

The spelling of 28131736739 in words is "twenty-eight billion, one hundred thirty-one million, seven hundred thirty-six thousand, seven hundred thirty-nine".