66055702064976 has 320 divisors, whose sum is σ = 206032653066240. Its totient is φ = 20141773217280.

The previous prime is 66055702064929. The next prime is 66055702064977. The reversal of 66055702064976 is 67946020755066.

66055702064976 is a `hidden beast` number, since 6 + 6 + 0 + 55 + 70 + 20 + 6 + 497 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66055702064977) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 534789241 + ... + 534912743.

It is an arithmetic number, because the mean of its divisors is an integer number (643852040832).

Almost surely, 2^{66055702064976} 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 66055702064976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103016326533120).

66055702064976 is an abundant number, since it is smaller than the sum of its proper divisors (139976951001264).

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

66055702064976 is a wasteful number, since it uses less digits than its factorization.

66055702064976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124391 (or 124379 counting only the distinct ones).

The product of its (nonzero) digits is 114307200, while the sum is 63.

The spelling of 66055702064976 in words is "sixty-six trillion, fifty-five billion, seven hundred two million, sixty-four thousand, nine hundred seventy-six".