6691603272480 has 960 divisors, whose sum is σ = 29326649425920. Its totient is φ = 1402255411200.

The previous prime is 6691603272479. The next prime is 6691603272517. The reversal of 6691603272480 is 842723061966.

6691603272480 is a `hidden beast` number, since 6 + 6 + 9 + 1 + 60 + 32 + 72 + 480 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 53371465 + ... + 53496695.

It is an arithmetic number, because the mean of its divisors is an integer number (30548593152).

Almost surely, 2^{6691603272480} is an apocalyptic number.

6691603272480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6691603272480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14663324712960).

6691603272480 is an abundant number, since it is smaller than the sum of its proper divisors (22635046153440).

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

6691603272480 is a wasteful number, since it uses less digits than its factorization.

6691603272480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125315 (or 125298 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 6691603272480 in words is "six trillion, six hundred ninety-one billion, six hundred three million, two hundred seventy-two thousand, four hundred eighty".