61800606991106 has 8 divisors (see below), whose sum is σ = 92700947147004. Its totient is φ = 30900291275440.

The previous prime is 61800606991103. The next prime is 61800606991127. The reversal of 61800606991106 is 60119960600816.

It can be written as a sum of positive squares in 2 ways, for example, as 60101116705081 + 1699490286025 = 7752491^2 + 1303645^2 .

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

It is not an unprimeable number, because it can be changed into a prime (61800606991103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2824496 + ... + 11470788.

Almost surely, 2^{61800606991106} is an apocalyptic number.

61800606991106 is a deficient number, since it is larger than the sum of its proper divisors (30900340155898).

61800606991106 is a wasteful number, since it uses less digits than its factorization.

61800606991106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12220116.

The product of its (nonzero) digits is 839808, while the sum is 53.

The spelling of 61800606991106 in words is "sixty-one trillion, eight hundred billion, six hundred six million, nine hundred ninety-one thousand, one hundred six".