6618699012480 has 128 divisors (see below), whose sum is σ = 21386104967520. Its totient is φ = 1740808470528.

The previous prime is 6618699012461. The next prime is 6618699012521. The reversal of 6618699012480 is 842109968166.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23471067 + ... + 23751386.

Almost surely, 2^{6618699012480} is an apocalyptic number.

6618699012480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6618699012480 is an abundant number, since it is smaller than the sum of its proper divisors (14767405955040).

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

6618699012480 is a wasteful number, since it uses less digits than its factorization.

6618699012480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47222548 (or 47222536 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 60.

The spelling of 6618699012480 in words is "six trillion, six hundred eighteen billion, six hundred ninety-nine million, twelve thousand, four hundred eighty".