6541439818032 has 120 divisors (see below), whose sum is σ = 21697121462016. Its totient is φ = 1868982797376.

The previous prime is 6541439818031. The next prime is 6541439818087. The reversal of 6541439818032 is 2308189341456.

It is a happy number.

6541439818032 is a `hidden beast` number, since 6 + 5 + 41 + 4 + 398 + 180 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 6541439818032.

It is not an unprimeable number, because it can be changed into a prime (6541439818031) 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 23 ways as a sum of consecutive naturals, for example, 120149148 + ... + 120203579.

Almost surely, 2^{6541439818032} is an apocalyptic number.

It is an amenable number.

6541439818032 is an abundant number, since it is smaller than the sum of its proper divisors (15155681643984).

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

6541439818032 is a wasteful number, since it uses less digits than its factorization.

6541439818032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240352757 (or 240352739 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 6541439818032 in words is "six trillion, five hundred forty-one billion, four hundred thirty-nine million, eight hundred eighteen thousand, thirty-two".