100661036827 has 4 divisors (see below), whose sum is σ = 108404193520. Its totient is φ = 92917880136.

The previous prime is 100661036821. The next prime is 100661036933. The reversal of 100661036827 is 728630166001.

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: 728630166001 = 154211 ⋅4724891.

It is a cyclic number.

It is not a de Polignac number, because 100661036827 - 2¹¹ = 100661034779 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 100661036827.

It is not an unprimeable number, because it can be changed into a prime (100661036821) 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, 3871578327 + ... + 3871578352.

It is an arithmetic number, because the mean of its divisors is an integer number (27101048380).

Almost surely, 2^100661036827 is an apocalyptic number.

100661036827 is a deficient number, since it is larger than the sum of its proper divisors (7743156693).

100661036827 is an equidigital number, since it uses as much as digits as its factorization.

100661036827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7743156692.

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 100661036827 in words is "one hundred billion, six hundred sixty-one million, thirty-six thousand, eight hundred twenty-seven".