73256065237 has 4 divisors (see below), whose sum is σ = 73928139340. Its totient is φ = 72583991136.

The previous prime is 73256065231. The next prime is 73256065247.

73256065237 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60402401361 + 12853663876 = 245769^2 + 113374^2 .

It is a cyclic number.

It is not a de Polignac number, because 73256065237 - 2¹¹ = 73256063189 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 (73256065231) 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, 336036888 + ... + 336037105.

It is an arithmetic number, because the mean of its divisors is an integer number (18482034835).

Almost surely, 2^73256065237 is an apocalyptic number.

It is an amenable number.

73256065237 is a deficient number, since it is larger than the sum of its proper divisors (672074103).

73256065237 is a wasteful number, since it uses less digits than its factorization.

73256065237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672074102.

The product of its (nonzero) digits is 1587600, while the sum is 46.

It can be divided in two parts, 732560 and 65237, that added together give a palindrome (797797).

The spelling of 73256065237 in words is "seventy-three billion, two hundred fifty-six million, sixty-five thousand, two hundred thirty-seven".