73621835689 has 8 divisors (see below), whose sum is σ = 79853813928. Its totient is φ = 67601111040.

The previous prime is 73621835687. The next prime is 73621835701. The reversal of 73621835689 is 98653812637.

It can be written as a sum of positive squares in 4 ways, for example, as 7306830400 + 66315005289 = 85480^2 + 257517^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 73621835689 - 2¹ = 73621835687 is a prime.

It is a super-2 number, since 2×73621835689² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73621835687) 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, 52812672 + ... + 52814065.

It is an arithmetic number, because the mean of its divisors is an integer number (9981726741).

Almost surely, 2^73621835689 is an apocalyptic number.

It is an amenable number.

73621835689 is a deficient number, since it is larger than the sum of its proper divisors (6231978239).

73621835689 is a wasteful number, since it uses less digits than its factorization.

73621835689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105626795.

The product of its digits is 13063680, while the sum is 58.

The spelling of 73621835689 in words is "seventy-three billion, six hundred twenty-one million, eight hundred thirty-five thousand, six hundred eighty-nine".