27493345572 has 432 divisors, whose sum is σ = 87173775360. Its totient is φ = 6598247040.

The previous prime is 27493345543. The next prime is 27493345601. The reversal of 27493345572 is 27554339472.

It is an interprime number because it is at equal distance from previous prime (27493345543) and next prime (27493345601).

It is a congruent number.

It is an unprimeable number.

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 143 ways as a sum of consecutive naturals, for example, 216482973 + ... + 216483099.

Almost surely, 2^27493345572 is an apocalyptic number.

27493345572 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 27493345572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43586887680).

27493345572 is an abundant number, since it is smaller than the sum of its proper divisors (59680429788).

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

27493345572 is a wasteful number, since it uses less digits than its factorization.

27493345572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 228 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 51.

The spelling of 27493345572 in words is "twenty-seven billion, four hundred ninety-three million, three hundred forty-five thousand, five hundred seventy-two".