66006610536 has 128 divisors (see below), whose sum is σ = 173877580800. Its totient is φ = 20840202240.

The previous prime is 66006610529. The next prime is 66006610573. The reversal of 66006610536 is 63501660066.

It is a junction number, because it is equal to n+sod(n) for n = 66006610494 and 66006610503.

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, 55607335 + ... + 55608521.

It is an arithmetic number, because the mean of its divisors is an integer number (1358418600).

Almost surely, 2^66006610536 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 66006610536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86938790400).

66006610536 is an abundant number, since it is smaller than the sum of its proper divisors (107870970264).

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

66006610536 is a wasteful number, since it uses less digits than its factorization.

66006610536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2119 (or 2115 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 39.

The spelling of 66006610536 in words is "sixty-six billion, six million, six hundred ten thousand, five hundred thirty-six".