1663811001100 has 36 divisors (see below), whose sum is σ = 3633466530064. Its totient is φ = 661285385280.

The previous prime is 1663811001079. The next prime is 1663811001107. The reversal of 1663811001100 is 11001183661.

It is not an unprimeable number, because it can be changed into a prime (1663811001107) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 52971912 + ... + 53003311.

Almost surely, 2^{1663811001100} is an apocalyptic number.

1663811001100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1663811001100 is an abundant number, since it is smaller than the sum of its proper divisors (1969655528964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1663811001100 is a wasteful number, since it uses less digits than its factorization.

1663811001100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105975394 (or 105975387 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 28.

Adding to 1663811001100 its reverse (11001183661), we get a palindrome (1674812184761).

The spelling of 1663811001100 in words is "one trillion, six hundred sixty-three billion, eight hundred eleven million, one thousand, one hundred".