73439424734387 has 2 divisors, whose sum is σ = 73439424734388. Its totient is φ = 73439424734386.

The previous prime is 73439424734371. The next prime is 73439424734443. The reversal of 73439424734387 is 78343742493437.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73439424734387 - 2⁴ = 73439424734371 is a prime.

It is not a weakly prime, because it can be changed into another prime (73439424734327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36719712367193 + 36719712367194.

It is an arithmetic number, because the mean of its divisors is an integer number (36719712367194).

Almost surely, 2^{73439424734387} is an apocalyptic number.

73439424734387 is a deficient number, since it is larger than the sum of its proper divisors (1).

73439424734387 is an equidigital number, since it uses as much as digits as its factorization.

73439424734387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1024192512, while the sum is 68.

The spelling of 73439424734387 in words is "seventy-three trillion, four hundred thirty-nine billion, four hundred twenty-four million, seven hundred thirty-four thousand, three hundred eighty-seven".