100663123305 has 16 divisors (see below), whose sum is σ = 168063649920. Its totient is φ = 51352781568.

The previous prime is 100663123283. The next prime is 100663123321. The reversal of 100663123305 is 503321366001.

It is a happy number.

It is not a de Polignac number, because 100663123305 - 2⁵ = 100663123273 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145888240 + ... + 145888929.

It is an arithmetic number, because the mean of its divisors is an integer number (10503978120).

Almost surely, 2^100663123305 is an apocalyptic number.

100663123305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100663123305 is a deficient number, since it is larger than the sum of its proper divisors (67400526615).

100663123305 is a wasteful number, since it uses less digits than its factorization.

100663123305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291777200.

The product of its (nonzero) digits is 9720, while the sum is 30.

Adding to 100663123305 its reverse (503321366001), we get a palindrome (603984489306).

The spelling of 100663123305 in words is "one hundred billion, six hundred sixty-three million, one hundred twenty-three thousand, three hundred five".