61943942106 has 28 divisors (see below), whose sum is σ = 139310144682. Its totient is φ = 20647980216.

The previous prime is 61943942041. The next prime is 61943942113. The reversal of 61943942106 is 60124934916.

61943942106 is a `hidden beast` number, since 6 + 194 + 39 + 421 + 0 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 33165873225 + 28778068881 = 182115^2 + 169641^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 21241321 + ... + 21244236.

Almost surely, 2^61943942106 is an apocalyptic number.

61943942106 is an abundant number, since it is smaller than the sum of its proper divisors (77366202576).

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

61943942106 is an equidigital number, since it uses as much as digits as its factorization.

61943942106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42485577 (or 42485562 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 61943942106 in words is "sixty-one billion, nine hundred forty-three million, nine hundred forty-two thousand, one hundred six".