27707277312 has 640 divisors, whose sum is σ = 98582465520. Its totient is φ = 7644119040.

The previous prime is 27707277293. The next prime is 27707277317. The reversal of 27707277312 is 21377270772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27707277317) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 379551708 + ... + 379551780.

Almost surely, 2^27707277312 is an apocalyptic number.

27707277312 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 27707277312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49291232760).

27707277312 is an abundant number, since it is smaller than the sum of its proper divisors (70875188208).

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

27707277312 is an equidigital number, since it uses as much as digits as its factorization.

27707277312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 403368, while the sum is 45.

The spelling of 27707277312 in words is "twenty-seven billion, seven hundred seven million, two hundred seventy-seven thousand, three hundred twelve".