1001663546811 has 16 divisors (see below), whose sum is σ = 1345682686080. Its totient is φ = 662727985920.

The previous prime is 1001663546743. The next prime is 1001663546833. The reversal of 1001663546811 is 1186453661001.

It is a happy number.

It is not a de Polignac number, because 1001663546811 - 2³⁴ = 984483677627 is a prime.

It is a super-2 number, since 2×1001663546811² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1001663546881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2017921 + ... + 2464818.

It is an arithmetic number, because the mean of its divisors is an integer number (84105167880).

Almost surely, 2^{1001663546811} is an apocalyptic number.

1001663546811 is a deficient number, since it is larger than the sum of its proper divisors (344019139269).

1001663546811 is a wasteful number, since it uses less digits than its factorization.

1001663546811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4483306.

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 1001663546811 in words is "one trillion, one billion, six hundred sixty-three million, five hundred forty-six thousand, eight hundred eleven".