66563475000 has 192 divisors, whose sum is σ = 226909226880. Its totient is φ = 16136400000.

The previous prime is 66563474981. The next prime is 66563475037. The reversal of 66563475000 is 57436566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 784659 + ... + 865341.

It is an arithmetic number, because the mean of its divisors is an integer number (1181818890).

Almost surely, 2^66563475000 is an apocalyptic number.

66563475000 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 66563475000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113454613440).

66563475000 is an abundant number, since it is smaller than the sum of its proper divisors (160345751880).

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

66563475000 is a wasteful number, since it uses less digits than its factorization.

66563475000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80728 (or 80704 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 42.

The spelling of 66563475000 in words is "sixty-six billion, five hundred sixty-three million, four hundred seventy-five thousand".