66100050030 has 128 divisors (see below), whose sum is σ = 188029486080. Its totient is φ = 14550681600.

The previous prime is 66100049971. The next prime is 66100050031. The reversal of 66100050030 is 3005000166.

It is a super-2 number, since 2×66100050030² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 66100049979 and 66100050006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66100050031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2428557 + ... + 2455623.

It is an arithmetic number, because the mean of its divisors is an integer number (1468980360).

Almost surely, 2^66100050030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66100050030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94014743040).

66100050030 is an abundant number, since it is smaller than the sum of its proper divisors (121929436050).

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

66100050030 is a wasteful number, since it uses less digits than its factorization.

66100050030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27514.

The product of its (nonzero) digits is 540, while the sum is 21.

Adding to 66100050030 its reverse (3005000166), we get a palindrome (69105050196).

The spelling of 66100050030 in words is "sixty-six billion, one hundred million, fifty thousand, thirty".