66102125610 has 128 divisors (see below), whose sum is σ = 170601707520. Its totient is φ = 16332005376.

The previous prime is 66102125581. The next prime is 66102125629. The reversal of 66102125610 is 1652120166.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24309831 + ... + 24312549.

It is an arithmetic number, because the mean of its divisors is an integer number (1332825840).

Almost surely, 2^66102125610 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66102125610, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85300853760).

66102125610 is an abundant number, since it is smaller than the sum of its proper divisors (104499581910).

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

66102125610 is a wasteful number, since it uses less digits than its factorization.

66102125610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3472.

The product of its (nonzero) digits is 4320, while the sum is 30.

Adding to 66102125610 its reverse (1652120166), we get a palindrome (67754245776).

The spelling of 66102125610 in words is "sixty-six billion, one hundred two million, one hundred twenty-five thousand, six hundred ten".