66105011560 has 64 divisors (see below), whose sum is σ = 170527622400. Its totient is φ = 22592134656.

The previous prime is 66105011501. The next prime is 66105011561. The reversal of 66105011560 is 6511050166.

66105011560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (66105011561) 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, 289500 + ... + 464779.

It is an arithmetic number, because the mean of its divisors is an integer number (2664494100).

Almost surely, 2^66105011560 is an apocalyptic number.

It is an amenable number.

66105011560 is an abundant number, since it is smaller than the sum of its proper divisors (104422610840).

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

66105011560 is a wasteful number, since it uses less digits than its factorization.

66105011560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754610 (or 754606 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 66105011560 in words is "sixty-six billion, one hundred five million, eleven thousand, five hundred sixty".