28135195639 has 2 divisors, whose sum is σ = 28135195640. Its totient is φ = 28135195638.

The previous prime is 28135195559. The next prime is 28135195651. The reversal of 28135195639 is 93659153182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28135195639 - 2¹¹ = 28135193591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28135195679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14067597819 + 14067597820.

It is an arithmetic number, because the mean of its divisors is an integer number (14067597820).

Almost surely, 2^28135195639 is an apocalyptic number.

28135195639 is a deficient number, since it is larger than the sum of its proper divisors (1).

28135195639 is an equidigital number, since it uses as much as digits as its factorization.

28135195639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1749600, while the sum is 52.

The spelling of 28135195639 in words is "twenty-eight billion, one hundred thirty-five million, one hundred ninety-five thousand, six hundred thirty-nine".