66051004560 has 160 divisors (see below), whose sum is σ = 205999708032. Its totient is φ = 17507143680.

The previous prime is 66051004549. The next prime is 66051004583. The reversal of 66051004560 is 6540015066.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34635127 + ... + 34637033.

Almost surely, 2^66051004560 is an apocalyptic number.

66051004560 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 66051004560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102999854016).

66051004560 is an abundant number, since it is smaller than the sum of its proper divisors (139948703472).

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

66051004560 is a wasteful number, since it uses less digits than its factorization.

66051004560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721 (or 2715 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 66051004560 in words is "sixty-six billion, fifty-one million, four thousand, five hundred sixty".