66255656660046 has 192 divisors, whose sum is σ = 173956558583808. Its totient is φ = 17791615263744.

The previous prime is 66255656659963. The next prime is 66255656660051. The reversal of 66255656660046 is 64006665655266.

It is a super-3 number, since 3×66255656660046³ (a number of 42 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4838644776 + ... + 4838658468.

It is an arithmetic number, because the mean of its divisors is an integer number (906023742624).

Almost surely, 2^{66255656660046} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66255656660046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86978279291904).

66255656660046 is an abundant number, since it is smaller than the sum of its proper divisors (107700901923762).

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

66255656660046 is a wasteful number, since it uses less digits than its factorization.

66255656660046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16735 (or 16732 counting only the distinct ones).

The product of its (nonzero) digits is 279936000, while the sum is 63.

The spelling of 66255656660046 in words is "sixty-six trillion, two hundred fifty-five billion, six hundred fifty-six million, six hundred sixty thousand, forty-six".