72929254273 has 4 divisors (see below), whose sum is σ = 72976216068. Its totient is φ = 72882292480.

The previous prime is 72929254271. The next prime is 72929254291. The reversal of 72929254273 is 37245292927.

It is a happy number.

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 31895459649 + 41033794624 = 178593^2 + 202568^2 .

It is a cyclic number.

It is not a de Polignac number, because 72929254273 - 2¹ = 72929254271 is a prime.

It is a super-3 number, since 3×72929254273³ (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 a self number, because there is not a number n which added to its sum of digits gives 72929254273.

It is not an unprimeable number, because it can be changed into a prime (72929254271) 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, 23478568 + ... + 23481673.

It is an arithmetic number, because the mean of its divisors is an integer number (18244054017).

Almost surely, 2^72929254273 is an apocalyptic number.

It is an amenable number.

72929254273 is a deficient number, since it is larger than the sum of its proper divisors (46961795).

72929254273 is a wasteful number, since it uses less digits than its factorization.

72929254273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46961794.

The product of its digits is 3810240, while the sum is 52.

The spelling of 72929254273 in words is "seventy-two billion, nine hundred twenty-nine million, two hundred fifty-four thousand, two hundred seventy-three".