3660666897975 has 48 divisors (see below), whose sum is σ = 6197756294400. Its totient is φ = 1905504088320.

The previous prime is 3660666897961. The next prime is 3660666898051. The reversal of 3660666897975 is 5797986660663.

It is not a de Polignac number, because 3660666897975 - 2⁷ = 3660666897847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3660666897975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3823491 + ... + 4684059.

It is an arithmetic number, because the mean of its divisors is an integer number (129119922800).

Almost surely, 2^{3660666897975} is an apocalyptic number.

3660666897975 is a deficient number, since it is larger than the sum of its proper divisors (2537089396425).

3660666897975 is a wasteful number, since it uses less digits than its factorization.

3660666897975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861944 (or 861939 counting only the distinct ones).

The product of its (nonzero) digits is 3703553280, while the sum is 78.

The spelling of 3660666897975 in words is "three trillion, six hundred sixty billion, six hundred sixty-six million, eight hundred ninety-seven thousand, nine hundred seventy-five".