100551720616205 has 8 divisors (see below), whose sum is σ = 125908241467392. Its totient is φ = 76943925341008.

The previous prime is 100551720616189. The next prime is 100551720616213. The reversal of 100551720616205 is 502616027155001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100551720616205 - 2⁴ = 100551720616189 is a prime.

It is a super-2 number, since 2×100551720616205² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437181393869 + ... + 437181394098.

It is an arithmetic number, because the mean of its divisors is an integer number (15738530183424).

Almost surely, 2^{100551720616205} is an apocalyptic number.

It is an amenable number.

100551720616205 is a deficient number, since it is larger than the sum of its proper divisors (25356520851187).

100551720616205 is an equidigital number, since it uses as much as digits as its factorization.

100551720616205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874362787995.

The product of its (nonzero) digits is 126000, while the sum is 41.

The spelling of 100551720616205 in words is "one hundred trillion, five hundred fifty-one billion, seven hundred twenty million, six hundred sixteen thousand, two hundred five".