73903720732 has 6 divisors (see below), whose sum is σ = 129331511288. Its totient is φ = 36951860364.

The previous prime is 73903720717. The next prime is 73903720757. The reversal of 73903720732 is 23702730937.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9237965088 + ... + 9237965095.

Almost surely, 2^73903720732 is an apocalyptic number.

It is an amenable number.

73903720732 is a deficient number, since it is larger than the sum of its proper divisors (55427790556).

73903720732 is a wasteful number, since it uses less digits than its factorization.

73903720732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18475930187 (or 18475930185 counting only the distinct ones).

The product of its (nonzero) digits is 333396, while the sum is 43.

The spelling of 73903720732 in words is "seventy-three billion, nine hundred three million, seven hundred twenty thousand, seven hundred thirty-two".