27751740980 has 24 divisors (see below), whose sum is σ = 58293347112. Its totient is φ = 11097898112.

The previous prime is 27751740979. The next prime is 27751741027. The reversal of 27751740980 is 8904715772.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8895507856 + 18856233124 = 94316^2 + 137318^2 .

It is a super-2 number, since 2×27751740980² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 92627 + ... + 253146.

It is an arithmetic number, because the mean of its divisors is an integer number (2428889463).

Almost surely, 2^27751740980 is an apocalyptic number.

27751740980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27751740980 is an abundant number, since it is smaller than the sum of its proper divisors (30541606132).

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

27751740980 is a wasteful number, since it uses less digits than its factorization.

27751740980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349795 (or 349793 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 50.

The spelling of 27751740980 in words is "twenty-seven billion, seven hundred fifty-one million, seven hundred forty thousand, nine hundred eighty".