66760647652 has 48 divisors (see below), whose sum is σ = 119159171712. Its totient is φ = 32721212160.

The previous prime is 66760647641. The next prime is 66760647697. The reversal of 66760647652 is 25674606766.

It is a super-2 number, since 2×66760647652² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66760647593 and 66760647602.

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, 48623238 + ... + 48624610.

It is an arithmetic number, because the mean of its divisors is an integer number (2482482744).

Almost surely, 2^66760647652 is an apocalyptic number.

It is an amenable number.

66760647652 is a deficient number, since it is larger than the sum of its proper divisors (52398524060).

66760647652 is a wasteful number, since it uses less digits than its factorization.

66760647652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308 (or 2306 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 55.

The spelling of 66760647652 in words is "sixty-six billion, seven hundred sixty million, six hundred forty-seven thousand, six hundred fifty-two".