61166600101 has 4 divisors (see below), whose sum is σ = 61429117932. Its totient is φ = 60904082272.

The previous prime is 61166600069. The next prime is 61166600107. The reversal of 61166600101 is 10100666116.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22605423201 + 38561176900 = 150351^2 + 196370^2 .

It is a cyclic number.

It is not a de Polignac number, because 61166600101 - 2⁵ = 61166600069 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 61166600101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61166600107) 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, 131258566 + ... + 131259031.

It is an arithmetic number, because the mean of its divisors is an integer number (15357279483).

Almost surely, 2^61166600101 is an apocalyptic number.

It is an amenable number.

61166600101 is a deficient number, since it is larger than the sum of its proper divisors (262517831).

61166600101 is a wasteful number, since it uses less digits than its factorization.

61166600101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262517830.

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 61166600101 in words is "sixty-one billion, one hundred sixty-six million, six hundred thousand, one hundred one".