27771264270 has 96 divisors (see below), whose sum is σ = 74293513632. Its totient is φ = 7192233216.

The previous prime is 27771264259. The next prime is 27771264271. The reversal of 27771264270 is 7246217772.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27771264271) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1867384 + ... + 1882196.

It is an arithmetic number, because the mean of its divisors is an integer number (773890767).

Almost surely, 2^27771264270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27771264270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37146756816).

27771264270 is an abundant number, since it is smaller than the sum of its proper divisors (46522249362).

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

27771264270 is a wasteful number, since it uses less digits than its factorization.

27771264270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15426 (or 15423 counting only the distinct ones).

The product of its (nonzero) digits is 460992, while the sum is 45.

The spelling of 27771264270 in words is "twenty-seven billion, seven hundred seventy-one million, two hundred sixty-four thousand, two hundred seventy".