66800677481460 has 96 divisors (see below), whose sum is σ = 223810816884480. Its totient is φ = 16443243686016.

The previous prime is 66800677481399. The next prime is 66800677481501. The reversal of 66800677481460 is 6418477600866.

66800677481460 is a `hidden beast` number, since 6 + 6 + 80 + 0 + 6 + 77 + 481 + 4 + 6 + 0 = 666.

It is a congruent number.

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, 4757875992 + ... + 4757890031.

It is an arithmetic number, because the mean of its divisors is an integer number (2331362675880).

Almost surely, 2^{66800677481460} is an apocalyptic number.

66800677481460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66800677481460 is an abundant number, since it is smaller than the sum of its proper divisors (157010139403020).

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

66800677481460 is a wasteful number, since it uses less digits than its factorization.

66800677481460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9515766054 (or 9515766046 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 63.

The spelling of 66800677481460 in words is "sixty-six trillion, eight hundred billion, six hundred seventy-seven million, four hundred eighty-one thousand, four hundred sixty".