100001601555 has 8 divisors (see below), whose sum is σ = 160002562512. Its totient is φ = 53334187488.

The previous prime is 100001601551. The next prime is 100001601587. The reversal of 100001601555 is 555106100001.

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

It is not a de Polignac number, because 100001601555 - 2² = 100001601551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100001601551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3333386704 + ... + 3333386733.

It is an arithmetic number, because the mean of its divisors is an integer number (20000320314).

Almost surely, 2^100001601555 is an apocalyptic number.

100001601555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

100001601555 is a deficient number, since it is larger than the sum of its proper divisors (60000960957).

100001601555 is an equidigital number, since it uses as much as digits as its factorization.

100001601555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6666773445.

The product of its (nonzero) digits is 750, while the sum is 24.

Adding to 100001601555 its reverse (555106100001), we get a palindrome (655107701556).

The spelling of 100001601555 in words is "one hundred billion, one million, six hundred one thousand, five hundred fifty-five".