66975509060 has 24 divisors (see below), whose sum is σ = 141893251416. Its totient is φ = 26553121280.

The previous prime is 66975509017. The next prime is 66975509099. The reversal of 66975509060 is 6090557966.

It can be written as a sum of positive squares in 4 ways, for example, as 4922706244 + 62052802816 = 70162^2 + 249104^2 .

It is a super-2 number, since 2×66975509060² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66975508993 and 66975509011.

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, 14815331 + ... + 14819850.

It is an arithmetic number, because the mean of its divisors is an integer number (5912218809).

Almost surely, 2^66975509060 is an apocalyptic number.

It is an amenable number.

66975509060 is an abundant number, since it is smaller than the sum of its proper divisors (74917742356).

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

66975509060 is a wasteful number, since it uses less digits than its factorization.

66975509060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29635303 (or 29635301 counting only the distinct ones).

The product of its (nonzero) digits is 3061800, while the sum is 53.

The spelling of 66975509060 in words is "sixty-six billion, nine hundred seventy-five million, five hundred nine thousand, sixty".