27750000055 has 16 divisors (see below), whose sum is σ = 33516431424. Its totient is φ = 22055848960.

The previous prime is 27750000053. The next prime is 27750000073. The reversal of 27750000055 is 55000005772.

It is not a de Polignac number, because 27750000055 - 2¹ = 27750000053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27749999981 and 27750000026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27750000053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1890645 + ... + 1905265.

It is an arithmetic number, because the mean of its divisors is an integer number (2094776964).

Almost surely, 2^27750000055 is an apocalyptic number.

27750000055 is a deficient number, since it is larger than the sum of its proper divisors (5766431369).

27750000055 is a wasteful number, since it uses less digits than its factorization.

27750000055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17066.

The product of its (nonzero) digits is 12250, while the sum is 31.

The spelling of 27750000055 in words is "twenty-seven billion, seven hundred fifty million, fifty-five", and thus it is an aban number.