66287226699840 has 112 divisors (see below), whose sum is σ = 210754661771520. Its totient is φ = 17652008632320.

The previous prime is 66287226699823. The next prime is 66287226699853. The reversal of 66287226699840 is 4899662278266.

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, 47327281 + ... + 48707760.

Almost surely, 2^{66287226699840} is an apocalyptic number.

66287226699840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66287226699840 is an abundant number, since it is smaller than the sum of its proper divisors (144467435071680).

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

66287226699840 is a wasteful number, since it uses less digits than its factorization.

66287226699840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96035780 (or 96035770 counting only the distinct ones).

The product of its (nonzero) digits is 1504935936, while the sum is 75.

The spelling of 66287226699840 in words is "sixty-six trillion, two hundred eighty-seven billion, two hundred twenty-six million, six hundred ninety-nine thousand, eight hundred forty".