73945721342 has 4 divisors (see below), whose sum is σ = 110918582016. Its totient is φ = 36972860670.

The previous prime is 73945721327. The next prime is 73945721371. The reversal of 73945721342 is 24312754937.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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, 18486430334 + ... + 18486430337.

It is an arithmetic number, because the mean of its divisors is an integer number (27729645504).

Almost surely, 2^73945721342 is an apocalyptic number.

73945721342 is a deficient number, since it is larger than the sum of its proper divisors (36972860674).

73945721342 is a wasteful number, since it uses less digits than its factorization.

73945721342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36972860673.

The product of its digits is 1270080, while the sum is 47.

The spelling of 73945721342 in words is "seventy-three billion, nine hundred forty-five million, seven hundred twenty-one thousand, three hundred forty-two".