66470786898 has 32 divisors (see below), whose sum is σ = 136895012160. Its totient is φ = 21501184320.

The previous prime is 66470786869. The next prime is 66470786909. The reversal of 66470786898 is 89868707466.

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, 310873 + ... + 479148.

It is an arithmetic number, because the mean of its divisors is an integer number (4277969130).

Almost surely, 2^66470786898 is an apocalyptic number.

66470786898 is an abundant number, since it is smaller than the sum of its proper divisors (70424225262).

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

66470786898 is a wasteful number, since it uses less digits than its factorization.

66470786898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790442.

The product of its (nonzero) digits is 195084288, while the sum is 69.

The spelling of 66470786898 in words is "sixty-six billion, four hundred seventy million, seven hundred eighty-six thousand, eight hundred ninety-eight".