6561768944010 has 32 divisors (see below), whose sum is σ = 17997994818432. Its totient is φ = 1499832901440.

The previous prime is 6561768943997. The next prime is 6561768944011. The reversal of 6561768944010 is 104498671656.

It is a super-2 number, since 2×6561768944010² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6561768944011) 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, 15623259181 + ... + 15623259600.

It is an arithmetic number, because the mean of its divisors is an integer number (562437338076).

Almost surely, 2^{6561768944010} is an apocalyptic number.

6561768944010 is an abundant number, since it is smaller than the sum of its proper divisors (11436225874422).

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

6561768944010 is a wasteful number, since it uses less digits than its factorization.

6561768944010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31246518798.

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 6561768944010 in words is "six trillion, five hundred sixty-one billion, seven hundred sixty-eight million, nine hundred forty-four thousand, ten".