72727515109441 has 4 divisors (see below), whose sum is σ = 72728967705300. Its totient is φ = 72726062513584.

The previous prime is 72727515109439. The next prime is 72727515109517. The reversal of 72727515109441 is 14490151572727.

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 54022720500225 + 18704794609216 = 7350015^2 + 4324904^2 .

It is a cyclic number.

It is not a de Polignac number, because 72727515109441 - 2¹ = 72727515109439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72727515100441) 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, 726222826 + ... + 726322963.

It is an arithmetic number, because the mean of its divisors is an integer number (18182241926325).

Almost surely, 2^{72727515109441} is an apocalyptic number.

It is an amenable number.

72727515109441 is a deficient number, since it is larger than the sum of its proper divisors (1452595859).

72727515109441 is a wasteful number, since it uses less digits than its factorization.

72727515109441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452595858.

The product of its (nonzero) digits is 4939200, while the sum is 55.

The spelling of 72727515109441 in words is "seventy-two trillion, seven hundred twenty-seven billion, five hundred fifteen million, one hundred nine thousand, four hundred forty-one".