73220738081 has 8 divisors (see below), whose sum is σ = 74574799200. Its totient is φ = 71870444800.

The previous prime is 73220738069. The next prime is 73220738089. The reversal of 73220738081 is 18083702237.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73220738081 is a prime.

It is a super-2 number, since 2×73220738081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (73220738089) 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, 902720 + ... + 980481.

It is an arithmetic number, because the mean of its divisors is an integer number (9321849900).

Almost surely, 2^73220738081 is an apocalyptic number.

It is an amenable number.

73220738081 is a deficient number, since it is larger than the sum of its proper divisors (1354061119).

73220738081 is a wasteful number, since it uses less digits than its factorization.

73220738081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883919.

The product of its (nonzero) digits is 112896, while the sum is 41.

The spelling of 73220738081 in words is "seventy-three billion, two hundred twenty million, seven hundred thirty-eight thousand, eighty-one".