72731850379 has 2 divisors, whose sum is σ = 72731850380. Its totient is φ = 72731850378.

The previous prime is 72731850361. The next prime is 72731850409. The reversal of 72731850379 is 97305813727.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72731850379 - 2⁷ = 72731850251 is a prime.

It is not a weakly prime, because it can be changed into another prime (72731880379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36365925189 + 36365925190.

It is an arithmetic number, because the mean of its divisors is an integer number (36365925190).

Almost surely, 2^72731850379 is an apocalyptic number.

72731850379 is a deficient number, since it is larger than the sum of its proper divisors (1).

72731850379 is an equidigital number, since it uses as much as digits as its factorization.

72731850379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2222640, while the sum is 52.

The spelling of 72731850379 in words is "seventy-two billion, seven hundred thirty-one million, eight hundred fifty thousand, three hundred seventy-nine".