1663551250100 has 72 divisors (see below), whose sum is σ = 3677883871200. Its totient is φ = 652931798400.

The previous prime is 1663551250091. The next prime is 1663551250117. The reversal of 1663551250100 is 10521553661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2931311 + ... + 3452489.

Almost surely, 2^{1663551250100} is an apocalyptic number.

1663551250100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1663551250100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1838941935600).

1663551250100 is an abundant number, since it is smaller than the sum of its proper divisors (2014332621100).

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

1663551250100 is a wasteful number, since it uses less digits than its factorization.

1663551250100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521793 (or 521786 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 1663551250100 in words is "one trillion, six hundred sixty-three billion, five hundred fifty-one million, two hundred fifty thousand, one hundred".