27263778880 has 56 divisors (see below), whose sum is σ = 69915874392. Its totient is φ = 10066624512.

The previous prime is 27263778859. The next prime is 27263778901. The reversal of 27263778880 is 8887736272.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (27263778859) and next prime (27263778901).

It can be written as a sum of positive squares in 4 ways, for example, as 1806336 + 27261972544 = 1344^2 + 165112^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3272737 + ... + 3281056.

It is an arithmetic number, because the mean of its divisors is an integer number (1248497757).

Almost surely, 2^27263778880 is an apocalyptic number.

27263778880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27263778880 is an abundant number, since it is smaller than the sum of its proper divisors (42652095512).

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

27263778880 is a wasteful number, since it uses less digits than its factorization.

27263778880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6553823 (or 6553813 counting only the distinct ones).

The product of its (nonzero) digits is 12644352, while the sum is 58.

The spelling of 27263778880 in words is "twenty-seven billion, two hundred sixty-three million, seven hundred seventy-eight thousand, eight hundred eighty".