66087398700 has 54 divisors (see below), whose sum is σ = 207147282524. Its totient is φ = 17623306080.

The previous prime is 66087398687. The next prime is 66087398711. The reversal of 66087398700 is 789378066.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 36714322 + ... + 36716121.

Almost surely, 2^66087398700 is an apocalyptic number.

66087398700 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66087398700 is an abundant number, since it is smaller than the sum of its proper divisors (141059883824).

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

66087398700 is a wasteful number, since it uses less digits than its factorization.

66087398700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73430463 (or 73430453 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 66087398700 in words is "sixty-six billion, eighty-seven million, three hundred ninety-eight thousand, seven hundred".