73422645476721 has 8 divisors (see below), whose sum is σ = 97905046724160. Its totient is φ = 48944337273552.

The previous prime is 73422645476717. The next prime is 73422645476771. The reversal of 73422645476721 is 12767454622437.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 73422645476721 - 2² = 73422645476717 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73422645476701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1023219210 + ... + 1023290963.

It is an arithmetic number, because the mean of its divisors is an integer number (12238130840520).

Almost surely, 2^{73422645476721} is an apocalyptic number.

It is an amenable number.

73422645476721 is a deficient number, since it is larger than the sum of its proper divisors (24482401247439).

73422645476721 is a wasteful number, since it uses less digits than its factorization.

73422645476721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046522135.

The product of its digits is 94832640, while the sum is 60.

The spelling of 73422645476721 in words is "seventy-three trillion, four hundred twenty-two billion, six hundred forty-five million, four hundred seventy-six thousand, seven hundred twenty-one".