100561615050009 has 4 divisors (see below), whose sum is σ = 134082153400016. Its totient is φ = 67041076700004.

The previous prime is 100561615049993. The next prime is 100561615050037. The reversal of 100561615050009 is 900050516165001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 100561615050009 - 2⁴ = 100561615049993 is a prime.

It is a super-2 number, since 2×100561615050009² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100561615050089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16760269174999 + ... + 16760269175004.

It is an arithmetic number, because the mean of its divisors is an integer number (33520538350004).

Almost surely, 2^{100561615050009} is an apocalyptic number.

It is an amenable number.

100561615050009 is a deficient number, since it is larger than the sum of its proper divisors (33520538350007).

100561615050009 is an equidigital number, since it uses as much as digits as its factorization.

100561615050009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33520538350006.

The product of its (nonzero) digits is 40500, while the sum is 39.

The spelling of 100561615050009 in words is "one hundred trillion, five hundred sixty-one billion, six hundred fifteen million, fifty thousand, nine".