1661546353708 has 24 divisors (see below), whose sum is σ = 3008027292480. Its totient is φ = 802111040640.

The previous prime is 1661546353681. The next prime is 1661546353723. The reversal of 1661546353708 is 8073536451661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8757288 + ... + 8945008.

It is an arithmetic number, because the mean of its divisors is an integer number (125334470520).

Almost surely, 2^{1661546353708} is an apocalyptic number.

It is an amenable number.

1661546353708 is a deficient number, since it is larger than the sum of its proper divisors (1346480938772).

1661546353708 is a wasteful number, since it uses less digits than its factorization.

1661546353708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264057 (or 264055 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 55.

The spelling of 1661546353708 in words is "one trillion, six hundred sixty-one billion, five hundred forty-six million, three hundred fifty-three thousand, seven hundred eight".