72717227741 has 4 divisors (see below), whose sum is σ = 72725036832. Its totient is φ = 72709418652.

The previous prime is 72717227707. The next prime is 72717227749. The reversal of 72717227741 is 14772271727.

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.

It is a cyclic number.

It is not a de Polignac number, because 72717227741 - 2³⁴ = 55537358557 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 (72717227749) 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, 3890561 + ... + 3909206.

It is an arithmetic number, because the mean of its divisors is an integer number (18181259208).

Almost surely, 2^72717227741 is an apocalyptic number.

It is an amenable number.

72717227741 is a deficient number, since it is larger than the sum of its proper divisors (7809091).

72717227741 is an equidigital number, since it uses as much as digits as its factorization.

72717227741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7809090.

The product of its digits is 537824, while the sum is 47.

The spelling of 72717227741 in words is "seventy-two billion, seven hundred seventeen million, two hundred twenty-seven thousand, seven hundred forty-one".