65660481172 has 24 divisors (see below), whose sum is σ = 134994277152. Its totient is φ = 27549852000.

The previous prime is 65660481101. The next prime is 65660481203. The reversal of 65660481172 is 27118406656.

It is a super-2 number, since 2×65660481172² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57394954 + ... + 57396097.

It is an arithmetic number, because the mean of its divisors is an integer number (5624761548).

Almost surely, 2^65660481172 is an apocalyptic number.

It is an amenable number.

65660481172 is an abundant number, since it is smaller than the sum of its proper divisors (69333795980).

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

65660481172 is a wasteful number, since it uses less digits than its factorization.

65660481172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114791079 (or 114791077 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 65660481172 in words is "sixty-five billion, six hundred sixty million, four hundred eighty-one thousand, one hundred seventy-two".