72438684326419 has 2 divisors, whose sum is σ = 72438684326420. Its totient is φ = 72438684326418.

The previous prime is 72438684326369. The next prime is 72438684326507. The reversal of 72438684326419 is 91462348683427.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72438684326419 - 2¹¹ = 72438684324371 is a prime.

It is a super-2 number, since 2×72438684326419² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72438634326419) 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, 36219342163209 + 36219342163210.

It is an arithmetic number, because the mean of its divisors is an integer number (36219342163210).

Almost surely, 2^{72438684326419} is an apocalyptic number.

72438684326419 is a deficient number, since it is larger than the sum of its proper divisors (1).

72438684326419 is an equidigital number, since it uses as much as digits as its factorization.

72438684326419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 334430208, while the sum is 67.

The spelling of 72438684326419 in words is "seventy-two trillion, four hundred thirty-eight billion, six hundred eighty-four million, three hundred twenty-six thousand, four hundred nineteen".