6555381775 has 24 divisors (see below), whose sum is σ = 8354934000. Its totient is φ = 5100268800.

The previous prime is 6555381769. The next prime is 6555381779. The reversal of 6555381775 is 5771835556.

It is not a de Polignac number, because 6555381775 - 2¹⁵ = 6555349007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6555381779) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111576 + ... + 159874.

It is an arithmetic number, because the mean of its divisors is an integer number (348122250).

Almost surely, 2^6555381775 is an apocalyptic number.

6555381775 is a deficient number, since it is larger than the sum of its proper divisors (1799552225).

6555381775 is a wasteful number, since it uses less digits than its factorization.

6555381775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48459 (or 48454 counting only the distinct ones).

The product of its digits is 4410000, while the sum is 52.

The square root of 6555381775 is about 80965.3121713243. The cubic root of 6555381775 is about 1871.5409315455.

The spelling of 6555381775 in words is "six billion, five hundred fifty-five million, three hundred eighty-one thousand, seven hundred seventy-five".