72151465493 has 2 divisors, whose sum is σ = 72151465494. Its totient is φ = 72151465492.

The previous prime is 72151465471. The next prime is 72151465531. The reversal of 72151465493 is 39456415127.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69589384804 + 2562080689 = 263798^2 + 50617^2 .

It is an emirp because it is prime and its reverse (39456415127) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72151465493 - 2¹² = 72151461397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72151965493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36075732746 + 36075732747.

It is an arithmetic number, because the mean of its divisors is an integer number (36075732747).

Almost surely, 2^72151465493 is an apocalyptic number.

It is an amenable number.

72151465493 is a deficient number, since it is larger than the sum of its proper divisors (1).

72151465493 is an equidigital number, since it uses as much as digits as its factorization.

72151465493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 47.

The spelling of 72151465493 in words is "seventy-two billion, one hundred fifty-one million, four hundred sixty-five thousand, four hundred ninety-three".