100641661061 has 8 divisors (see below), whose sum is σ = 101055989880. Its totient is φ = 100227630528.

The previous prime is 100641661037. The next prime is 100641661069. The reversal of 100641661061 is 160166146001.

It can be written as a sum of positive squares in 4 ways, for example, as 15105884836 + 85535776225 = 122906^2 + 292465^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 100641661061 - 2¹⁰ = 100641660037 is a prime.

It is a super-2 number, since 2×100641661061² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100641661069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614675 + ... + 760991.

It is an arithmetic number, because the mean of its divisors is an integer number (12631998735).

Almost surely, 2^100641661061 is an apocalyptic number.

It is an amenable number.

100641661061 is a deficient number, since it is larger than the sum of its proper divisors (414328819).

100641661061 is a wasteful number, since it uses less digits than its factorization.

100641661061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149143.

The product of its (nonzero) digits is 5184, while the sum is 32.

The spelling of 100641661061 in words is "one hundred billion, six hundred forty-one million, six hundred sixty-one thousand, sixty-one".