27358825981 has 8 divisors (see below), whose sum is σ = 28000115264. Its totient is φ = 26717765760.

The previous prime is 27358825957. The next prime is 27358825993. The reversal of 27358825981 is 18952885372.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27358825981 - 2⁹ = 27358825469 is a prime.

It is a super-2 number, since 2×27358825981² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27358825931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197536 + ... + 306166.

It is an arithmetic number, because the mean of its divisors is an integer number (3500014408).

Almost surely, 2^27358825981 is an apocalyptic number.

It is an amenable number.

27358825981 is a deficient number, since it is larger than the sum of its proper divisors (641289283).

27358825981 is a wasteful number, since it uses less digits than its factorization.

27358825981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114531.

The product of its digits is 9676800, while the sum is 58.

The spelling of 27358825981 in words is "twenty-seven billion, three hundred fifty-eight million, eight hundred twenty-five thousand, nine hundred eighty-one".