66500610110648 has 128 divisors (see below), whose sum is σ = 157449626219520. Its totient is φ = 25656591206400.

The previous prime is 66500610110639. The next prime is 66500610110663. The reversal of 66500610110648 is 84601101600566.

It is a super-2 number, since 2×66500610110648² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66500610110599 and 66500610110608.

It is a congruent number.

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, 1128993998 + ... + 1129052898.

It is an arithmetic number, because the mean of its divisors is an integer number (1230075204840).

Almost surely, 2^{66500610110648} is an apocalyptic number.

66500610110648 is a gapful number since it is divisible by the number (68) 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 66500610110648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78724813109760).

66500610110648 is an abundant number, since it is smaller than the sum of its proper divisors (90949016108872).

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

66500610110648 is a wasteful number, since it uses less digits than its factorization.

66500610110648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110517 (or 110513 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 66500610110648 in words is "sixty-six trillion, five hundred billion, six hundred ten million, one hundred ten thousand, six hundred forty-eight".