100536661867 has 4 divisors (see below), whose sum is σ = 101809277920. Its totient is φ = 99264045816.

The previous prime is 100536661861. The next prime is 100536661903. The reversal of 100536661867 is 768166635001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 768166635001 = 31 ⋅24779568871.

It is a cyclic number.

It is not a de Polignac number, because 100536661867 - 2⁷ = 100536661739 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100536661867.

It is not an unprimeable number, because it can be changed into a prime (100536661861) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 636307908 + ... + 636308065.

It is an arithmetic number, because the mean of its divisors is an integer number (25452319480).

Almost surely, 2^100536661867 is an apocalyptic number.

100536661867 is a deficient number, since it is larger than the sum of its proper divisors (1272616053).

100536661867 is an equidigital number, since it uses as much as digits as its factorization.

100536661867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272616052.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 100536661867 in words is "one hundred billion, five hundred thirty-six million, six hundred sixty-one thousand, eight hundred sixty-seven".