73699840121986 has 64 divisors (see below), whose sum is σ = 129215032240896. Its totient is φ = 31213316966400.

The previous prime is 73699840121923. The next prime is 73699840121989. The reversal of 73699840121986 is 68912104899637.

It is not an unprimeable number, because it can be changed into a prime (73699840121989) 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 31 ways as a sum of consecutive naturals, for example, 26644401 + ... + 29280091.

It is an arithmetic number, because the mean of its divisors is an integer number (2018984878764).

Almost surely, 2^{73699840121986} is an apocalyptic number.

73699840121986 is a deficient number, since it is larger than the sum of its proper divisors (55515192118910).

73699840121986 is a wasteful number, since it uses less digits than its factorization.

73699840121986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2637307.

The product of its (nonzero) digits is 282175488, while the sum is 73.

The spelling of 73699840121986 in words is "seventy-three trillion, six hundred ninety-nine billion, eight hundred forty million, one hundred twenty-one thousand, nine hundred eighty-six".