72784321151 has 2 divisors, whose sum is σ = 72784321152. Its totient is φ = 72784321150.

The previous prime is 72784321139. The next prime is 72784321177. The reversal of 72784321151 is 15112348727.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72784321151 - 2²⁶ = 72717212287 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72784321099 and 72784321108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72784321121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36392160575 + 36392160576.

It is an arithmetic number, because the mean of its divisors is an integer number (36392160576).

Almost surely, 2^72784321151 is an apocalyptic number.

72784321151 is a deficient number, since it is larger than the sum of its proper divisors (1).

72784321151 is an equidigital number, since it uses as much as digits as its factorization.

72784321151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 41.

Adding to 72784321151 its reverse (15112348727), we get a palindrome (87896669878).

The spelling of 72784321151 in words is "seventy-two billion, seven hundred eighty-four million, three hundred twenty-one thousand, one hundred fifty-one".