27721775040 has 56 divisors (see below), whose sum is σ = 88016638800. Its totient is φ = 7392473088.

The previous prime is 27721775021. The next prime is 27721775077. The reversal of 27721775040 is 4057712772.

It is a super-2 number, since 2×27721775040² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27721774983 and 27721775001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14437465 + ... + 14439384.

Almost surely, 2^27721775040 is an apocalyptic number.

27721775040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27721775040 is an abundant number, since it is smaller than the sum of its proper divisors (60294863760).

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

27721775040 is a wasteful number, since it uses less digits than its factorization.

27721775040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28876869 (or 28876859 counting only the distinct ones).

The product of its (nonzero) digits is 192080, while the sum is 42.

The spelling of 27721775040 in words is "twenty-seven billion, seven hundred twenty-one million, seven hundred seventy-five thousand, forty".