27910797720 has 256 divisors, whose sum is σ = 92738580480. Its totient is φ = 6676992000.

The previous prime is 27910797679. The next prime is 27910797731. The reversal of 27910797720 is 2779701972.

It is a happy number.

It is a zygodrome in base 2.

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, 11070060 + ... + 11072580.

It is an arithmetic number, because the mean of its divisors is an integer number (362260080).

Almost surely, 2^27910797720 is an apocalyptic number.

27910797720 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 27910797720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46369290240).

27910797720 is an abundant number, since it is smaller than the sum of its proper divisors (64827782760).

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

27910797720 is a wasteful number, since it uses less digits than its factorization.

27910797720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2746 (or 2742 counting only the distinct ones).

The product of its (nonzero) digits is 777924, while the sum is 51.

The spelling of 27910797720 in words is "twenty-seven billion, nine hundred ten million, seven hundred ninety-seven thousand, seven hundred twenty".