72444952337 has 4 divisors (see below), whose sum is σ = 74211902436. Its totient is φ = 70678002240.

The previous prime is 72444952301. The next prime is 72444952339. The reversal of 72444952337 is 73325944427.

It is a Cunningham number, because it is equal to 269156²+1.

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 3490919056 + 68954033281 = 59084^2 + 262591^2 .

It is a cyclic number.

It is not a de Polignac number, because 72444952337 - 2⁸ = 72444952081 is a prime.

It is a super-2 number, since 2×72444952337² (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 (72444952339) 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, 883474988 + ... + 883475069.

It is an arithmetic number, because the mean of its divisors is an integer number (18552975609).

Almost surely, 2^72444952337 is an apocalyptic number.

It is an amenable number.

72444952337 is a deficient number, since it is larger than the sum of its proper divisors (1766950099).

72444952337 is a wasteful number, since it uses less digits than its factorization.

72444952337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766950098.

The product of its digits is 5080320, while the sum is 50.

The spelling of 72444952337 in words is "seventy-two billion, four hundred forty-four million, nine hundred fifty-two thousand, three hundred thirty-seven".