27959419965 has 16 divisors (see below), whose sum is σ = 46680075648. Its totient is φ = 14263356096.

The previous prime is 27959419949. The next prime is 27959419979. The reversal of 27959419965 is 56991495972.

It is not a de Polignac number, because 27959419965 - 2⁴ = 27959419949 is a prime.

It is a super-4 number, since 4×27959419965⁴ (a number of 43 digits) contains 4444 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 27959419896 and 27959419905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40520554 + ... + 40521243.

It is an arithmetic number, because the mean of its divisors is an integer number (2917504728).

Almost surely, 2^27959419965 is an apocalyptic number.

It is an amenable number.

27959419965 is a deficient number, since it is larger than the sum of its proper divisors (18720655683).

27959419965 is a wasteful number, since it uses less digits than its factorization.

27959419965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81041828.

The product of its digits is 55112400, while the sum is 66.

The spelling of 27959419965 in words is "twenty-seven billion, nine hundred fifty-nine million, four hundred nineteen thousand, nine hundred sixty-five".