73680688678 has 4 divisors (see below), whose sum is σ = 110521033020. Its totient is φ = 36840344338.

The previous prime is 73680688673. The next prime is 73680688691. The reversal of 73680688678 is 87688608637.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87688608637 = 7 ⋅12526944091.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73680688673) 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 as a sum of consecutive naturals, namely, 18420172168 + ... + 18420172171.

It is an arithmetic number, because the mean of its divisors is an integer number (27630258255).

Almost surely, 2^73680688678 is an apocalyptic number.

73680688678 is a deficient number, since it is larger than the sum of its proper divisors (36840344342).

73680688678 is a wasteful number, since it uses less digits than its factorization.

73680688678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36840344341.

The product of its (nonzero) digits is 130056192, while the sum is 67.

The spelling of 73680688678 in words is "seventy-three billion, six hundred eighty million, six hundred eighty-eight thousand, six hundred seventy-eight".