73788587273 has 4 divisors (see below), whose sum is σ = 73789157700. Its totient is φ = 73788016848.

The previous prime is 73788587237. The next prime is 73788587287. The reversal of 73788587273 is 37278588737.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 45025444864 + 28763142409 = 212192^2 + 169597^2 .

It is a cyclic number.

It is not a de Polignac number, because 73788587273 - 2³⁰ = 72714845449 is a prime.

It is a super-2 number, since 2×73788587273² (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 (73788587203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12203 + ... + 384351.

It is an arithmetic number, because the mean of its divisors is an integer number (18447289425).

Almost surely, 2^73788587273 is an apocalyptic number.

It is an amenable number.

73788587273 is a deficient number, since it is larger than the sum of its proper divisors (570427).

73788587273 is a wasteful number, since it uses less digits than its factorization.

73788587273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570426.

The product of its digits is 110638080, while the sum is 65.

The spelling of 73788587273 in words is "seventy-three billion, seven hundred eighty-eight million, five hundred eighty-seven thousand, two hundred seventy-three".