1001663546812 has 48 divisors (see below), whose sum is σ = 1805017556160. Its totient is φ = 486154626048.

The previous prime is 1001663546743. The next prime is 1001663546833. The reversal of 1001663546812 is 2186453661001.

It is a super-2 number, since 2×1001663546812² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23845764 + ... + 23887732.

It is an arithmetic number, because the mean of its divisors is an integer number (37604532420).

Almost surely, 2^{1001663546812} is an apocalyptic number.

It is an amenable number.

1001663546812 is a deficient number, since it is larger than the sum of its proper divisors (803354009348).

1001663546812 is a wasteful number, since it uses less digits than its factorization.

1001663546812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43222 (or 43220 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 1001663546812 in words is "one trillion, one billion, six hundred sixty-three million, five hundred forty-six thousand, eight hundred twelve".