6656045511720 has 128 divisors (see below), whose sum is σ = 22081825031040. Its totient is φ = 1591482839040.

The previous prime is 6656045511701. The next prime is 6656045511727. The reversal of 6656045511720 is 271155406566.

It is a self number, because there is not a number n which added to its sum of digits gives 6656045511720.

It is not an unprimeable number, because it can be changed into a prime (6656045511727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34441029 + ... + 34633748.

It is an arithmetic number, because the mean of its divisors is an integer number (172514258055).

Almost surely, 2^{6656045511720} is an apocalyptic number.

6656045511720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6656045511720 is an abundant number, since it is smaller than the sum of its proper divisors (15425779519320).

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

6656045511720 is a wasteful number, since it uses less digits than its factorization.

6656045511720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69074875 (or 69074871 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 48.

The spelling of 6656045511720 in words is "six trillion, six hundred fifty-six billion, forty-five million, five hundred eleven thousand, seven hundred twenty".