27478087472 has 60 divisors (see below), whose sum is σ = 59098488288. Its totient is φ = 12366288000.

The previous prime is 27478087471. The next prime is 27478087487.

27478087472 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×27478087472² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27478087471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125273 + ... + 265799.

Almost surely, 2^27478087472 is an apocalyptic number.

27478087472 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27478087472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29549244144).

27478087472 is an abundant number, since it is smaller than the sum of its proper divisors (31620400816).

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

27478087472 is a wasteful number, since it uses less digits than its factorization.

27478087472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140658 (or 140641 counting only the distinct ones).

The product of its (nonzero) digits is 9834496, while the sum is 56.

The spelling of 27478087472 in words is "twenty-seven billion, four hundred seventy-eight million, eighty-seven thousand, four hundred seventy-two".