20217662590100 has 72 divisors (see below), whose sum is σ = 44013002154240. Its totient is φ = 8061151380480.

The previous prime is 20217662590093. The next prime is 20217662590123. The reversal of 20217662590100 is 109526671202.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 95875379 + ... + 96086021.

Almost surely, 2^{20217662590100} is an apocalyptic number.

20217662590100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20217662590100 is an abundant number, since it is smaller than the sum of its proper divisors (23795339564140).

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

20217662590100 is a wasteful number, since it uses less digits than its factorization.

20217662590100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213729 (or 213722 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 20217662590100 in words is "twenty trillion, two hundred seventeen billion, six hundred sixty-two million, five hundred ninety thousand, one hundred".