72324107461 has 4 divisors (see below), whose sum is σ = 74088110124. Its totient is φ = 70560104800.

The previous prime is 72324107399. The next prime is 72324107473. The reversal of 72324107461 is 16470142327.

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 9971021025 + 62353086436 = 99855^2 + 249706^2 .

It is a cyclic number.

It is not a de Polignac number, because 72324107461 - 2⁷ = 72324107333 is a prime.

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 72324107461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72324107761) 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, 882001270 + ... + 882001351.

It is an arithmetic number, because the mean of its divisors is an integer number (18522027531).

Almost surely, 2^72324107461 is an apocalyptic number.

It is an amenable number.

72324107461 is a deficient number, since it is larger than the sum of its proper divisors (1764002663).

72324107461 is a wasteful number, since it uses less digits than its factorization.

72324107461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764002662.

The product of its (nonzero) digits is 56448, while the sum is 37.

Adding to 72324107461 its reverse (16470142327), we get a palindrome (88794249788).

The spelling of 72324107461 in words is "seventy-two billion, three hundred twenty-four million, one hundred seven thousand, four hundred sixty-one".