27207800440 has 64 divisors (see below), whose sum is σ = 62455730400. Its totient is φ = 10664189952.

The previous prime is 27207800407. The next prime is 27207800441. The reversal of 27207800440 is 4400870272.

It is a junction number, because it is equal to n+sod(n) for n = 27207800396 and 27207800405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27207800441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 720264 + ... + 757096.

Almost surely, 2^27207800440 is an apocalyptic number.

27207800440 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 27207800440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31227865200).

27207800440 is an abundant number, since it is smaller than the sum of its proper divisors (35247929960).

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

27207800440 is a wasteful number, since it uses less digits than its factorization.

27207800440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37216 (or 37212 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 34.

The spelling of 27207800440 in words is "twenty-seven billion, two hundred seven million, eight hundred thousand, four hundred forty".