66000977326080 has 312 divisors, whose sum is σ = 228863577969312. Its totient is φ = 17593481428992.

The previous prime is 66000977325991. The next prime is 66000977326139. The reversal of 66000977326080 is 8062377900066.

66000977326080 is a `hidden beast` number, since 6 + 600 + 0 + 9 + 7 + 7 + 3 + 26 + 0 + 8 + 0 = 666.

It is a super-2 number, since 2×66000977326080² (a number of 28 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 487827402 + ... + 487962678.

It is an arithmetic number, because the mean of its divisors is an integer number (733537108876).

Almost surely, 2^{66000977326080} is an apocalyptic number.

66000977326080 is a gapful number since it is divisible by the number (60) 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 66000977326080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114431788984656).

66000977326080 is an abundant number, since it is smaller than the sum of its proper divisors (162862600643232).

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

66000977326080 is a wasteful number, since it uses less digits than its factorization.

66000977326080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137959 (or 137934 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 54.

The spelling of 66000977326080 in words is "sixty-six trillion, nine hundred seventy-seven million, three hundred twenty-six thousand, eighty".