72489337369 has 4 divisors (see below), whose sum is σ = 74031663744. Its totient is φ = 70947010996.

The previous prime is 72489337357. The next prime is 72489337381. The reversal of 72489337369 is 96373398427.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96373398427 = 7759 ⋅12420853.

It is an interprime number because it is at equal distance from previous prime (72489337357) and next prime (72489337381).

It is a cyclic number.

It is not a de Polignac number, because 72489337369 - 2¹³ = 72489329177 is a prime.

It is a super-3 number, since 3×72489337369³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72489337769) 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, 771163117 + ... + 771163210.

It is an arithmetic number, because the mean of its divisors is an integer number (18507915936).

Almost surely, 2^72489337369 is an apocalyptic number.

It is an amenable number.

72489337369 is a deficient number, since it is larger than the sum of its proper divisors (1542326375).

72489337369 is a wasteful number, since it uses less digits than its factorization.

72489337369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1542326374.

The product of its digits is 41150592, while the sum is 61.

The spelling of 72489337369 in words is "seventy-two billion, four hundred eighty-nine million, three hundred thirty-seven thousand, three hundred sixty-nine".