27985458972 has 24 divisors (see below), whose sum is σ = 67064254096. Its totient is φ = 9076364928.

The previous prime is 27985458937. The next prime is 27985458979.

27985458972 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27985458979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31514713 + ... + 31515600.

Almost surely, 2^27985458972 is an apocalyptic number.

It is an amenable number.

27985458972 is an abundant number, since it is smaller than the sum of its proper divisors (39078795124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27985458972 is a wasteful number, since it uses less digits than its factorization.

27985458972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63030357 (or 63030355 counting only the distinct ones).

The product of its digits is 101606400, while the sum is 66.

The spelling of 27985458972 in words is "twenty-seven billion, nine hundred eighty-five million, four hundred fifty-eight thousand, nine hundred seventy-two".