73811043986 has 4 divisors (see below), whose sum is σ = 110716565982. Its totient is φ = 36905521992.

The previous prime is 73811043983. The next prime is 73811044003. The reversal of 73811043986 is 68934011837.

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

It can be written as a sum of positive squares in only one way, i.e., 39035880625 + 34775163361 = 197575^2 + 186481^2 .

It is not an unprimeable number, because it can be changed into a prime (73811043983) 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 as a sum of consecutive naturals, namely, 18452760995 + ... + 18452760998.

Almost surely, 2^73811043986 is an apocalyptic number.

73811043986 is a deficient number, since it is larger than the sum of its proper divisors (36905521996).

73811043986 is a wasteful number, since it uses less digits than its factorization.

73811043986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36905521995.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 73811043986 in words is "seventy-three billion, eight hundred eleven million, forty-three thousand, nine hundred eighty-six".