72464172733 has 8 divisors (see below), whose sum is σ = 74979173880. Its totient is φ = 69950254080.

The previous prime is 72464172731. The next prime is 72464172763. The reversal of 72464172733 is 33727146427.

It can be written as a sum of positive squares in 4 ways, for example, as 10456698564 + 62007474169 = 102258^2 + 249013^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72464172733 - 2¹ = 72464172731 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 (72464172731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133228 + ... + 403333.

It is an arithmetic number, because the mean of its divisors is an integer number (9372396735).

Almost surely, 2^72464172733 is an apocalyptic number.

It is an amenable number.

72464172733 is a deficient number, since it is larger than the sum of its proper divisors (2515001147).

72464172733 is a wasteful number, since it uses less digits than its factorization.

72464172733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541247.

The product of its digits is 1185408, while the sum is 46.

The spelling of 72464172733 in words is "seventy-two billion, four hundred sixty-four million, one hundred seventy-two thousand, seven hundred thirty-three".