73945622239 has 4 divisors (see below), whose sum is σ = 74117190240. Its totient is φ = 73774054240.

The previous prime is 73945622237. The next prime is 73945622263. The reversal of 73945622239 is 93222654937.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93222654937 = 19 ⋅4906455523.

It is a cyclic number.

It is not a de Polignac number, because 73945622239 - 2¹ = 73945622237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73945622237) 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 3 ways as a sum of consecutive naturals, for example, 85783354 + ... + 85784215.

It is an arithmetic number, because the mean of its divisors is an integer number (18529297560).

Almost surely, 2^73945622239 is an apocalyptic number.

73945622239 is a deficient number, since it is larger than the sum of its proper divisors (171568001).

73945622239 is a wasteful number, since it uses less digits than its factorization.

73945622239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171568000.

The product of its digits is 4898880, while the sum is 52.

The spelling of 73945622239 in words is "seventy-three billion, nine hundred forty-five million, six hundred twenty-two thousand, two hundred thirty-nine".