27750525305553 has 32 divisors (see below), whose sum is σ = 43071483576320. Its totient is φ = 17636347293840.

The previous prime is 27750525305549. The next prime is 27750525305579. The reversal of 27750525305553 is 35550352505772.

27750525305553 is a `hidden beast` number, since 2 + 7 + 7 + 5 + 0 + 5 + 2 + 530 + 55 + 53 = 666.

It is not a de Polignac number, because 27750525305553 - 2² = 27750525305549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 27750525305553.

It is not an unprimeable number, because it can be changed into a prime (27750525304553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247367425 + ... + 247479582.

It is an arithmetic number, because the mean of its divisors is an integer number (1345983861760).

Almost surely, 2^{27750525305553} is an apocalyptic number.

It is an amenable number.

27750525305553 is a deficient number, since it is larger than the sum of its proper divisors (15320958270767).

27750525305553 is a wasteful number, since it uses less digits than its factorization.

27750525305553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494847114 (or 494847108 counting only the distinct ones).

The product of its (nonzero) digits is 27562500, while the sum is 54.

The spelling of 27750525305553 in words is "twenty-seven trillion, seven hundred fifty billion, five hundred twenty-five million, three hundred five thousand, five hundred fifty-three".