100020206303661 has 32 divisors (see below), whose sum is σ = 152991599247360. Its totient is φ = 56937260575296.

The previous prime is 100020206303603. The next prime is 100020206303713. The reversal of 100020206303661 is 166303602020001.

It is not a de Polignac number, because 100020206303661 - 2²² = 100020202109357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100020206303161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1607335 + ... + 14234603.

It is an arithmetic number, because the mean of its divisors is an integer number (4780987476480).

Almost surely, 2^{100020206303661} is an apocalyptic number.

It is an amenable number.

100020206303661 is a deficient number, since it is larger than the sum of its proper divisors (52971392943699).

100020206303661 is a wasteful number, since it uses less digits than its factorization.

100020206303661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12628713.

The product of its (nonzero) digits is 7776, while the sum is 30.

Adding to 100020206303661 its reverse (166303602020001), we get a palindrome (266323808323662).

The spelling of 100020206303661 in words is "one hundred trillion, twenty billion, two hundred six million, three hundred three thousand, six hundred sixty-one".