100661036826 has 24 divisors (see below), whose sum is σ = 234190984320. Its totient is φ = 28760296152.

The previous prime is 100661036821. The next prime is 100661036933. The reversal of 100661036826 is 628630166001.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100661036821) 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 11 ways as a sum of consecutive naturals, for example, 171191946 + ... + 171192533.

It is an arithmetic number, because the mean of its divisors is an integer number (9757957680).

Almost surely, 2^100661036826 is an apocalyptic number.

100661036826 is an abundant number, since it is smaller than the sum of its proper divisors (133529947494).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100661036826 is a wasteful number, since it uses less digits than its factorization.

100661036826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342384498 (or 342384491 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The spelling of 100661036826 in words is "one hundred billion, six hundred sixty-one million, thirty-six thousand, eight hundred twenty-six".