27069664440 has 256 divisors, whose sum is σ = 102275712000. Its totient is φ = 5578481664.

The previous prime is 27069664373. The next prime is 27069664469. The reversal of 27069664440 is 4446696072.

It is a self number, because there is not a number n which added to its sum of digits gives 27069664440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 440736 + ... + 498384.

It is an arithmetic number, because the mean of its divisors is an integer number (399514500).

Almost surely, 2^27069664440 is an apocalyptic number.

27069664440 is a gapful number since it is divisible by the number (20) 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 27069664440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51137856000).

27069664440 is an abundant number, since it is smaller than the sum of its proper divisors (75206047560).

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

27069664440 is a wasteful number, since it uses less digits than its factorization.

27069664440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57726 (or 57722 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 48.

The spelling of 27069664440 in words is "twenty-seven billion, sixty-nine million, six hundred sixty-four thousand, four hundred forty".