27879093891533 has 2 divisors, whose sum is σ = 27879093891534. Its totient is φ = 27879093891532.

The previous prime is 27879093891511. The next prime is 27879093891547. The reversal of 27879093891533 is 33519839097872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24945759452329 + 2933334439204 = 4994573^2 + 1712698^2 .

It is a cyclic number.

It is not a de Polignac number, because 27879093891533 - 2⁶ = 27879093891469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27879093891503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13939546945766 + 13939546945767.

It is an arithmetic number, because the mean of its divisors is an integer number (13939546945767).

Almost surely, 2^{27879093891533} is an apocalyptic number.

It is an amenable number.

27879093891533 is a deficient number, since it is larger than the sum of its proper divisors (1).

27879093891533 is an equidigital number, since it uses as much as digits as its factorization.

27879093891533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 617258880, while the sum is 74.

The spelling of 27879093891533 in words is "twenty-seven trillion, eight hundred seventy-nine billion, ninety-three million, eight hundred ninety-one thousand, five hundred thirty-three".