72424342461 has 4 divisors (see below), whose sum is σ = 96565789952. Its totient is φ = 48282894972.

The previous prime is 72424342439. The next prime is 72424342493. The reversal of 72424342461 is 16424342427.

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 not a de Polignac number, because 72424342461 - 2¹⁵ = 72424309693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72424342421) 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, 12070723741 + ... + 12070723746.

It is an arithmetic number, because the mean of its divisors is an integer number (24141447488).

Almost surely, 2^72424342461 is an apocalyptic number.

It is an amenable number.

72424342461 is a deficient number, since it is larger than the sum of its proper divisors (24141447491).

72424342461 is a wasteful number, since it uses less digits than its factorization.

72424342461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24141447490.

The product of its digits is 258048, while the sum is 39.

Adding to 72424342461 its reverse (16424342427), we get a palindrome (88848684888).

The spelling of 72424342461 in words is "seventy-two billion, four hundred twenty-four million, three hundred forty-two thousand, four hundred sixty-one".