72424342493 has 2 divisors, whose sum is σ = 72424342494. Its totient is φ = 72424342492.

The previous prime is 72424342439. The next prime is 72424342517. The reversal of 72424342493 is 39424342427.

Together with previous prime (72424342439) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51629837284 + 20794505209 = 227222^2 + 144203^2 .

It is a cyclic number.

It is not a de Polignac number, because 72424342493 - 2¹⁰ = 72424341469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72424342093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36212171246 + 36212171247.

It is an arithmetic number, because the mean of its divisors is an integer number (36212171247).

Almost surely, 2^72424342493 is an apocalyptic number.

It is an amenable number.

72424342493 is a deficient number, since it is larger than the sum of its proper divisors (1).

72424342493 is an equidigital number, since it uses as much as digits as its factorization.

72424342493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 44.

The spelling of 72424342493 in words is "seventy-two billion, four hundred twenty-four million, three hundred forty-two thousand, four hundred ninety-three".