27356123240 has 128 divisors (see below), whose sum is σ = 69004224000. Its totient is φ = 9699545088.

The previous prime is 27356123237. The next prime is 27356123261. The reversal of 27356123240 is 4232165372.

It is a self number, because there is not a number n which added to its sum of digits gives 27356123240.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2229041 + ... + 2241279.

It is an arithmetic number, because the mean of its divisors is an integer number (539095500).

Almost surely, 2^27356123240 is an apocalyptic number.

27356123240 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 27356123240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34502112000).

27356123240 is an abundant number, since it is smaller than the sum of its proper divisors (41648100760).

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

27356123240 is a wasteful number, since it uses less digits than its factorization.

27356123240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12459 (or 12455 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 35.

The spelling of 27356123240 in words is "twenty-seven billion, three hundred fifty-six million, one hundred twenty-three thousand, two hundred forty".