6552985440 has 96 divisors (see below), whose sum is σ = 20653647840. Its totient is φ = 1746468864.

The previous prime is 6552985429. The next prime is 6552985441. The reversal of 6552985440 is 445892556.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 6552985440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6552985441) 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, 1288182 + ... + 1293258.

It is an arithmetic number, because the mean of its divisors is an integer number (215142165).

Almost surely, 2^6552985440 is an apocalyptic number.

6552985440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6552985440 is an abundant number, since it is smaller than the sum of its proper divisors (14100662400).

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

6552985440 is a wasteful number, since it uses less digits than its factorization.

6552985440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7784 (or 7776 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 48.

The square root of 6552985440 is about 80950.5122899170. The cubic root of 6552985440 is about 1871.3128550437.

The spelling of 6552985440 in words is "six billion, five hundred fifty-two million, nine hundred eighty-five thousand, four hundred forty".