66052217272116 has 48 divisors (see below), whose sum is σ = 156010207961664. Its totient is φ = 21747746017536.

The previous prime is 66052217272099. The next prime is 66052217272121. The reversal of 66052217272116 is 61127271225066.

It is a super-2 number, since 2×66052217272116² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1752105 + ... + 11626448.

It is an arithmetic number, because the mean of its divisors is an integer number (3250212665868).

Almost surely, 2^{66052217272116} is an apocalyptic number.

It is an amenable number.

66052217272116 is an abundant number, since it is smaller than the sum of its proper divisors (89957990689548).

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

66052217272116 is a wasteful number, since it uses less digits than its factorization.

66052217272116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13383600 (or 13383598 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 66052217272116 in words is "sixty-six trillion, fifty-two billion, two hundred seventeen million, two hundred seventy-two thousand, one hundred sixteen".