66562747100 has 72 divisors (see below), whose sum is σ = 146631375408. Its totient is φ = 26224128000.

The previous prime is 66562747099. The next prime is 66562747157. The reversal of 66562747100 is 174726566.

It is a super-3 number, since 3×66562747100³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1932227 + ... + 1966373.

Almost surely, 2^66562747100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66562747100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73315687704).

66562747100 is an abundant number, since it is smaller than the sum of its proper divisors (80068628308).

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

66562747100 is a wasteful number, since it uses less digits than its factorization.

66562747100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34455 (or 34448 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 66562747100 in words is "sixty-six billion, five hundred sixty-two million, seven hundred forty-seven thousand, one hundred".