72701724479 has 2 divisors, whose sum is σ = 72701724480. Its totient is φ = 72701724478.

The previous prime is 72701724463. The next prime is 72701724523. The reversal of 72701724479 is 97442710727.

It is a weak prime.

It is an emirp because it is prime and its reverse (97442710727) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72701724479 - 2⁴ = 72701724463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72701724419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36350862239 + 36350862240.

It is an arithmetic number, because the mean of its divisors is an integer number (36350862240).

Almost surely, 2^72701724479 is an apocalyptic number.

72701724479 is a deficient number, since it is larger than the sum of its proper divisors (1).

72701724479 is an equidigital number, since it uses as much as digits as its factorization.

72701724479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1382976, while the sum is 50.

The spelling of 72701724479 in words is "seventy-two billion, seven hundred one million, seven hundred twenty-four thousand, four hundred seventy-nine".