27531770412 has 54 divisors (see below), whose sum is σ = 67826749284. Its totient is φ = 8690794560.

The previous prime is 27531770389. The next prime is 27531770429. The reversal of 27531770412 is 21407713572.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10919712 + ... + 10922232.

Almost surely, 2^27531770412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27531770412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33913374642).

27531770412 is an abundant number, since it is smaller than the sum of its proper divisors (40294978872).

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

27531770412 is an equidigital number, since it uses as much as digits as its factorization.

27531770412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5087 (or 2545 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 39.

The spelling of 27531770412 in words is "twenty-seven billion, five hundred thirty-one million, seven hundred seventy thousand, four hundred twelve".