6555953438 has 4 divisors (see below), whose sum is σ = 9833930160. Its totient is φ = 3277976718.

The previous prime is 6555953407. The next prime is 6555953441. The reversal of 6555953438 is 8343595556.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×6555953438³ (a number of 30 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6555953438.

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 as a sum of consecutive naturals, namely, 1638988358 + ... + 1638988361.

It is an arithmetic number, because the mean of its divisors is an integer number (2458482540).

Almost surely, 2^6555953438 is an apocalyptic number.

6555953438 is a deficient number, since it is larger than the sum of its proper divisors (3277976722).

6555953438 is a wasteful number, since it uses less digits than its factorization.

6555953438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3277976721.

The product of its digits is 9720000, while the sum is 53.

The square root of 6555953438 is about 80968.8423901441. The cubic root of 6555953438 is about 1871.5953326285.

The spelling of 6555953438 in words is "six billion, five hundred fifty-five million, nine hundred fifty-three thousand, four hundred thirty-eight".