61550126066 has 32 divisors (see below), whose sum is σ = 110084885568. Its totient is φ = 25439768640.

The previous prime is 61550126063. The next prime is 61550126093. The reversal of 61550126066 is 66062105516.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61550126063) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1586885 + ... + 1625208.

It is an arithmetic number, because the mean of its divisors is an integer number (3440152674).

Almost surely, 2^61550126066 is an apocalyptic number.

61550126066 is a deficient number, since it is larger than the sum of its proper divisors (48534759502).

61550126066 is a wasteful number, since it uses less digits than its factorization.

61550126066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3212186.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 61550126066 in words is "sixty-one billion, five hundred fifty million, one hundred twenty-six thousand, sixty-six".