73391481539 has 2 divisors, whose sum is σ = 73391481540. Its totient is φ = 73391481538.

The previous prime is 73391481521. The next prime is 73391481587. The reversal of 73391481539 is 93518419337.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73391481539 - 2²⁰ = 73390432963 is a prime.

It is not a weakly prime, because it can be changed into another prime (73391484539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36695740769 + 36695740770.

It is an arithmetic number, because the mean of its divisors is an integer number (36695740770).

Almost surely, 2^73391481539 is an apocalyptic number.

73391481539 is a deficient number, since it is larger than the sum of its proper divisors (1).

73391481539 is an equidigital number, since it uses as much as digits as its factorization.

73391481539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 53.

The spelling of 73391481539 in words is "seventy-three billion, three hundred ninety-one million, four hundred eighty-one thousand, five hundred thirty-nine".